View allAll Photos Tagged pigmentation
Laguna Colorada (Red Lagoon) is a shallow salt lake in the southwest of the altiplano of Bolivia, within Eduardo Avaroa Andean Fauna National Reserve and close to the border with Chile.
The lake contains borax islands, whose white color contrasts with the reddish color of its waters, which is caused by red sediments and pigmentation of some algae.
Laguna Colorada is one of the Ramsar Wetlands of International Importance under the Ramsar Convention signed in 1971.
James's Flamingos abound in the area. Also it is possible to find Andean and Chilean flamingos, but in a minor quantity.
information credit to: www.untamedscience.com/biodiversity/white-squirrel/
What is a White Squirrel?
White squirrels are almost always a white version of the eastern grey squirrel. There are a few types of genetic aberrations that cause the white coats. The first is albinism, caused by a mutation on a gene that codes for pigmentation. Albinos have red eyes. The other is a white morph, caused by a different gene. It is a naturally occurring trait of eastern grey squirrels that is very, very rare. In our study, we’re trying to figure out just how rare.
Why are there white squirrels?
For some odd reason, eastern grey squirrels in the US do have a gene that will make their coats white. It’s somewhat rare to see a white squirrel, though, because white squirrels are likely highly selected against. In other words, predators to squirrels such as hawks really like it when their prey is highlighted white!
There are a few towns in the US, though, that have very high numbers of white squirrels. This could be for a few reasons. First, predators in towns tend to be low. This cancels out the negative selection against the white morph. Sometimes in towns, a few neighbors will also select against the normal coloration of eastern grey squirrel. Yes, that happens. After a few generations, all you get are whites, and they can spread to the rest of the town! Fascinating!
Scientific Name: Ursus maritimus
Description : Polar bears are considered the largest land carnivores in the world, matched only by very large individual Kodiak brown bears. Both sexes differ in size throughout their range; males being much larger than females and continuing to grow for a longer period of time. These bears have long, massive skulls, necks and bodies with long legs and large paws. Ears and tail are short. The nose is more prominent or “Roman†with a black rhinarium (nose pad). The tongue is black and the eyes brown. The surface of the skin is also black. Fur colour varies slightly with the season: new coats grown just prior to the winter season are very white appearing as slightly creamy white against the stark white of their icy winter environment. This pelage is thick, coarse and long with dense underfur. Guard hairs, found throughout the pelage, are shiny, almost glossy, oily and waterproof and have hollow shafts. Polar bears moult annually between the end of May and August. The coat becomes thinner and has a yellow wash or is almost a golden colour.
Male polar bears weigh between 400 – 600 kg, and have been recorded up to a maximum of 800 kg. Females are smaller than the males weighing up to 300 kg, and when pregnant up to 460 kg. Polar bears are 2.5 – 3.5 m long.
Distribution : The polar bear is circumpolar in distribution, inhabiting all Arctic seas and coastlines. It is found on the pack-ice off the Alaskan coast north of Bering Strait, off the coasts of Greenland and along the Eurasian Arctic coast from Spitsbergen to Wrangell Island. Rare stragglers reach Iceland. Individual bears have been seen on the frozen Arctic Ocean as far as latitude 88 degrees North, only 2 degrees from the North Pole. In Canada, they are found along the Arctic coasts from Alaska to Labrador and from the tip of James Bay to northern Ellesmere Island. Polar bears do roam as far as 150 kilometres inland into the coniferous forests, where they live very differently from the polar bears which belong to the high Arctic.
Habitat : They prefer areas of annual ice, which they use as a hunting platform and protective cover. This includes snow-drifted pressure ridges, refrozen cracks and areas of open water surrounded by ice. In areas where the pack ice melts by mid to late summer they come inland and live in coniferous forest areas. Here they remain until the ice re-freezes. Areas of solidly frozen sea ice and the open seas are avoided. Generally they are most common along coastal areas. Some do enter the permanent pack ice.
Food : The ringed seal is by far the most common prey. They also eat bearded seal, harp seal and hooded seal. Young walrus are sometimes taken. During the summer months they feed upon the shoreline carrion, fish, mussels, crabs, starfish, lemmings and the eggs and nestling young of waterfowl and cliff-dwelling birds. They will also graze on kelp, grasses and eat mushrooms and crowberries.
Reproduction and Development : Normally they are solitary animals outside the breeding season, the exception being a mother with cubs. Polar bears mate in mid-summer. Females first start to breed at 3 to 5 years of age. In April and May adult females are in oestrus and ready to accept a mate. They are polyandrous, meaning one female will mate with more than one male in one breeding season. Males fight among themselves for the female’s attention and a couple will pair off for a period of a few days to two weeks. With females, delayed implantation occurs, the fertilized egg does not implant in the uterus until mid-September to mid-October. Embryonic development begins at this time. Gestation periods, therefore, vary a great deal when including this period of delay. Females choose suitable locations to build their maternity dens in mid-October and retreat to them for the winter season. They give birth to one to four cubs somewhere between late November and early January. Twins are most common. The newborns are small; 25 to 30 cm long and weigh less than 1 kg. They are covered with very fine hair, appearing almost naked and their eyes are closed. Their eyes open at 6 weeks. Growth is very quick; at two months their fur has thickened; they weigh about 5 kg and move about the den. By mid-March to early April, when the den is opened, the cubs weigh about 10 kg and are surprisingly strong. The cubs suckle for nine months, occasionally one year. They are very dependent on their mother and stay with her for two years. At that time they weigh 90 - 180 kg and are half grown.
Adaptations : Polar bears are wonderfully adapted to their Arctic surroundings.
Locomotion. On land a shuffling walk may be increased to a rolling gallop of 40 km/h and can outrun caribou over a short distance. Bears are often seen standing high on their hind legs, necks stretched to scan the landscape. On thin ice, legs are spread to distribute body mass. Thickly padded and furred soles allow the bear to move quietly as well as providing good traction. Small bumps and cavities on the soles act like suction cups keeping bears from slipping on the ice. The claws are used to dig into icy slopes and to grip prey. They are strong swimmers, paddling with their forefeet only and trailing their hind feet which act as a rudder. They can stay submerged for over one minute, keeping their eyes open. They swim at a speed of approximately 6.4 km/h, often covering long distances.
Insulation. Polar bears have a thick layer of sub-cutaneous fat and very dense underfur with several layers of glossy guard hair on the outside. Their pelt is much thicker in winter and provides excellent insulation. The fat layer also adds to buoyancy in the water. Water is shed easily from the oily waterproof fur. Small, furry ears have a heavy network of blood vessels, keeping them warm and conserving heat. The tail is short and rounded also conserving heat. Fur is very dense around the soles of the feet.
Pelage. The creamy white appearance of the coat allows the bear to be inconspicuous when hunting seal. Each hair is similar to an optical fibre; colourless and hollow. Being translucent, it reflects the heat from the sun down to the base of the hair, where it is absorbed by the black skin. Whiteness comes from reflection of light rather than pigmentation.
Hunting. Bears use their keen sense of smell to detect seal breathing holes. These can be up to a kilometer away and covered by a layer of snow and ice. They will stand or lie by the seal’s blowhole in the ice for hours; they may swim towards seals resting on the ice flows with only their nose showing above the water. They will dive quietly, then swim up to the ice edge and jump out on the seal, and will also crawl towards a sunbathing seal using every piece of raised ice to conceal the approach.
Denning. Both sexes occupy dens for shelter. Topographic factors influence the den sites. In Canadian core areas, dens frequently occur on south-facing slopes where northerly prevailing winds create the best drifts, where the wind-chill is least and insulation from received solar radiation is greatest. One of the three largest denning areas worldwide is in Canada. There are three main types of winter refuges: maternity dens, temporary dens and winter shelters. During the winter any bear may dig a temporary den and use it for a few days during a storm, or take shelter in a natural cavity. Winter shelters are used for longer periods of time as resting places. This type of shelter is usually roomier with additional features such as alcoves, porches and ventilation holes. Bears do not hibernate in the strict sense of the word; they have the ability to slow down their metabolism to conserve energy at any time of year. The state of self-induced lethargy while in the shelter allows them to preserve their vital fat reserves. During this time, the body temperature of the polar bear decreases by a few degrees from normal and the respiration rates are markedly reduced. Maternity dens are built and occupied by pregnant females and can vary in size. The denning chamber is at the upper end of an entrance tunnel 1 to 2 m long. It averages 1.5 m in diameter with a height of 90 to 100cm in the middle. Drifting snow seals the entrance. The chamber is higher than the tunnel, trapping bear body heat inside. Dens not only provide a safe place to give birth to her cubs, but are also a place of protection for the cubs during their first few months. During this time she does not leave the den, remaining with her cubs and living on her reserves of fat. In the spring, with her fat severely depleted she must leave to find food to sustain herself and her cubs. After they leave the maternity den she will build temporary refuges in which to nurse, rest and shelter her young cubs and warms them as they all sleep together. She heads with her cubs towards the nearest supply of food, usually towards pack ice.
Sight and sounds. Polar bears have good eyesight. Their eyes have inner eyelids that keep the glare of the sun on snow and ice from blinding them. When defending a food source from other bears they use a deep growl. They hiss and snort to show aggression. Angry bears use loud roars and growls. Mothers scold cubs with a low growl.
Threats to Survival : Polar bears are one of the animals most threatened by global warming. They depend entirely on sea ice as a platform from which to hunt seals. Reduction of the total ice cover in the Arctic is a serious concern globally. When the ice does not form or forms too late in the season many polar bears starve. In Hudson Bay, scientists have found the main cause of death for cubs to be either lack of food or lack of fat on nursing mothers. Exploitation of minerals and fossil fuels in the Arctic pose a continuous threat. Of the oil and natural gas deposits globally, 20% are located in the Arctic. As the ice cap recedes these become more accessible. Countries are competing which each other in claiming ownership of Arctic and its resources. This can only result in further and more drastic impact on polar bear habitat.
Status : IUCN: Vulnerable; CITES: Appendix II; COSEWIC: Special Concern
Zoo Diet : Toronto Zoo carnivore diet, dog chow, jumbo smelt and herring, carrots, bean sprouts, Vitamin E and Thiamine supplements.
Toronto Zoo Website
en.wikipedia.org/wiki/Common_Blackbird - (Turdus Merula)
That was my initial thought when I first saw this odd looking white-headed Blackbird. If not that, then perhaps a juvenile stage? Turns out that this Blackbird is "leucistic".
Albinism and Leucism is apparently quite common among Blackbirds. Albinism occurs as a result of a complete lack of pigments whereas leucistic birds have weak pigmentation (e.g. white head, or white patches on the wings). This is the first such Blackbird I've encountered, and I'm wondering if anyone here has sighted the same?
[I'm still rummaging thru my archive...none new photos at the moment :( ]
Globular springtail - Sminthurinus reticulatus, on a fallen laurel leaf.
Sminthurinus springtails are very small (this one ~0.5mm) and I'm seeing quite a few in leaf-litter locally. They are just visible to the naked eye and in my local churchyard (where I do a fair bit of photography), seem to like the underside of damp laurel leaves. I understand that there's a degree of seasonality with these, so I'm photographing as many as I can while they're around.
When I photographed my first Sminthurinus springtails (November 2012), the commonest species locally was Sminthurinus aureus. This is the same size and shape, but lacks the distinct transverse banding seen on Sminthurinus reticulatus. Currently, reticulatus has replaced aureus as the main species locally (in my very un-scientific and un-controlled survey!). I'll follow these "trends" while I can. Before long, I know that the church gardener is going to clear all the leaves away!
It's thought that Sminthurinus reticulatus is a relatively recent "alien" introduction into the UK and it has been recorded in southern England and the Midlands.
UPDATE: (See Comments) Frans Janssens feels that these should in the UK, be described as Sminthurinus aureus forma reticulata, and that Sminthuinus reticulatus should be reserved for those with black pigmentation in the reticulate pattern.
Did You Know?
Males sing complex songs on wintering grounds in Hawaii, that can last up to 20 minutes and be heard 20 miles (30 km) away!
In the Pacific, humpbacks migrate seasonally from Alaska to Hawaii--they can complete the 3,000-mile (4,830 km) trip in as few as 36 days!
Species Description:
Weight:25-40 tons (50,000-80,000 pounds; 22,000-36,000 kg);
newborns weigh about 1 ton (2,000 pounds; 900 kg)
Length:Up to 60 feet (18 m), with females larger than males;
newborns are about 15 feet (4.5 m) long
Appearance: Primarily dark grey, with some areas of white
Lifespan:About 50 years
Diet:Tiny crustaceans (mostly krill), plankton, and small fish; they can consume up to 3,000 pounds (1360 kg) of food per day
Behavior:Breaching (jumping out of the water), or slapping the surface
Humpback whales are well known for their long pectoral fins, which can be up to 15 feet (4.6 m) in length. Their scientific name, Megaptera novaeangliae, means "big-winged New Englander" as the New England population was the one best known to Europeans. These long fins give them increased maneuverability; they can be used to slow down or even go backwards.
Similar to all baleen whales, adult females are larger than adult males, reaching lengths of up to 60 feet (18 m). Their body coloration is primarily dark grey, but individuals have a variable amount of white on their pectoral fins and belly. This variation is so distinctive that the pigmentation pattern on the undersides of their "flukes" is used to identify individual whales, similar to a human fingerprint.
Humpback whales are the favorite of whale watchers, as they frequently perform aerial displays, such as breaching (jumping out of the water), or slapping the surface with their pectoral fins, tails, or heads.
In the summer, humpbacks are found in high latitude feeding grounds, such as the Gulf of Maine in the Atlantic and Gulf of Alaska in the Pacific. In the winter, they migrate to calving grounds in subtropical or tropical waters, such as the Dominican Republic in the Atlantic and the Hawaiian Islands in the Pacific. The Arabian Sea humpback does not migrate, remaining in tropical waters all year.
Humpback whales travel great distances during their seasonal migration, the farthest migration of any mammal. The longest recorded migration was 5,160 miles (8,300 km); seven animals, including a calf, completed this trek from Costa Rica to Antarctica. One of the more closely studied routes is between Alaska and Hawaii, where humpbacks have been observed making the 3,000-mile (4,830 km) trip in as few as 36 days.
During the summer months, humpbacks spend the majority of their time feeding and building up fat stores (blubber) that they will live off of during the winter. Humpbacks filter feed on tiny crustaceans (mostly krill), plankton, and small fish and can consume up to 3,000 pounds (1,360 kg) of food per day. Several hunting methods involve using air bubbles to herd, corral, or disorient fish. One highly complex variant, called "bubble netting" is unique to humpbacks. This technique is often performed in groups with defined roles for distracting, scaring, and herding before whales lunge at prey corralled near the surface.
In their wintering grounds, humpback whales congregate and engage in mating activities. Humpbacks are generally polygynous "having multiple female mates" with males exhibiting competitive behavior on wintering grounds. Aggressive and antagonistic behaviors include chasing, vocal and bubble displays, horizontal tail thrashing, and rear body thrashing. Males within these groups also make physical contact, striking or surfacing on top of one another. These bouts can cause injuries ranging from bloody scrapes to, in one recorded instance, death. Also on wintering grounds, males sing complex songs that can last up to 20 minutes and be heard 20 miles (30 km) away. A male may sing for hours, repeating the song several times. All males in a population sing the same song, but that song continually evolves over time. Humpback whale singing has been studied for decades, but scientists still understand very little about its function.
Gestation lasts for about 11 months. Newborns are 13-16 feet (4-5 m) long and grow quickly from the highly nutritious milk of their mothers. Weaning occurs between 6-10 months after birth. Mothers are protective and affectionate towards their calves, swimming close and frequently touching them with their flippers. Males do not provide parental support for calves. Breeding usually occurs once every two years, but sometimes occurs twice in a three-year span.
Habitat
During migration, humpbacks stay near the surface of the ocean.
While feeding and calving, humpbacks prefer shallow waters. During calving, humpbacks are usually found in the warmest waters available at that latitude. Calving grounds are commonly near offshore reef systems, islands, or continental shores.
Humpback feeding grounds are in cold, productive coastal waters.
Distribution
Humpback whales live in all major oceans from the equator to sub-polar latitudes.
In the North Pacific, there are at least three separate populations:
California/Oregon/Washington stock that winters in coastal Central America and Mexico and migrates to areas ranging from the coast of California to southern British Columbia in summer/fall;
Central North Pacific stock that winters in the Hawaiian Islands and migrates to northern British Columbia/ Southeast Alaska and Prince William Sound west to Kodiak; and Western North Pacific stock that winters near Japan and probably migrates to waters west of the Kodiak Archipelago (the Bering Sea and Aleutian Islands) in summer/fall. There is some mixing between these populations, though they are still considered distinct stocks.
Threats
Humpback whales face a series of threats including:
entanglement in fishing gear
Whale watch harassment
Habitat impacts
Harvest
Humpbacks can become entangled in fishing gear, either swimming off with the gear or becoming anchored. We have observed incidental "take" of humpback whales in the California/ Oregon swordfish and thresher shark drift gillnet fishery. Potential entanglement from gear from several fisheries can occur on their long migration from Hawaii to Alaska. Humpbacks in Hawaii have been observed entangled in long line gear, crab pots, and other non-fishery-related lines.
Inadvertent ship strikes can injure or kill humpbacks. Whale watching vessels may stress or even strike whales. The central North Pacific stock is the focus of a whale-watching industry on their wintering grounds in the Hawaiian Islands. The feeding aggregation in southeast Alaska is also the focus of a developing whale-watching industry that may impact whales in localized areas.
Shipping channels, fisheries, and aquaculture may occupy or destroy humpback whale aggregation areas. Recreational use of marine areas, including resort development and increased boat traffic, may displace whales that would normally use that area. In Hawaii, acoustic impacts from vessel operation, oceanographic research using active sonar, and military operations are also of increasing concern.
Source: www.nmfs.noaa.gov/pr/species/mammals/whales/humpback-whal...
Our Motives cosmetics are becoming very popular among the celebrities. And why not? The makeup's pigmentation is true. Motives is for all shades of skin and the foundation is totally customizable for an exact match. It is high quality makeup at affordable prices. Come see for yourself: www.motivescosmetics.com/tanyab
How To Pick The Best Skin Whitening Product?
There are a lot of skin whitening supplements and creams out there, but finding the right one can be hard. The American Academy of Dermatology has these tips for your research:
1) Learn what kinds actually work by looking at reviews from people who have tried them before you;
2) Make sure it's clinically tested so authorities will approve its safety
3). Check if any cancer cells could grow in response to this supplement/cream.
If you’ve been struggling with your skin tone, wondering what works and what doesn't work for a while now then we understand how frustrating it can get. But don't worry because here is the list of ingredients that will help improve those pesky blemishes.
5 must-have ingredients to look for in a skin whitening cream
1. Retinol
The benefits of topical retinol include:
It's an effective way to regenerate new cells and can be used for both acne treatment as well hyperpigmentation caused byparentage issues or sun damage. Topical Retinoic Acid has been shown not only to help fade dark spots but also reveal brighter, healthier looking skin beneath!
2. kojic acid
It works by inhibiting the enzyme necessary in production of melanin, helping to fade dark spots and discoloration. It also improves your overall skin tone making it a great anti-ageing product! Helps reduce redness from acne scarring or inflammation caused due .
3. alpha arbutin
Alpha Arbutin is a natural ingredient with less side effects than Hydroquinone. It has been proven to be effective in lightening skin and fading dark spots, age freckles or post-inflammatory hyperpigmentation. The serum also blocks melanin synthesis so it's safe for all types of people who want a better looking healthier complexion.
4. Niacinamide
There is a wide range of products available on the market today, but some can be more effective than others. Reports indicate that 5% niacinamide concentration in skincare has been enough to treat hyperpigmentation and other types skin damage due UV rays exposure such as elastase/collagen production strengthening lightens dark spots caused by sunburn or old acne scars while also increasing collagen production which keeps your face looking smooth and moisturized all day long.
5. citric acid
Citric acid is a naturally occurring ingredient that has been used for centuries as an antioxidant, guards against free radicals and fights aging. It also helps brighten your skin tone by removing dead cells from the surface of our bodies which promote newer healthy looking ones.
3 ingredients to avoid in a skin whitening cream
1. Hydroquinone
You might think that chemical bleaching agents like hydroquinone are the answer to all your skincare problems, but there's been a lot of criticism about their safety.
The main concern with using these chemicals is ochronosis which can develop after long-term use and causes dark patches on skin resembling scars or burn marks from sun exposure. The FDA has temporarily banned this ingredient because it is potentially harmful. This means you should not use the product continuously for more than five months at a time and with regulations on dosage, length of use method etc. There are chances that your skin may darken in response to prolonged exposure too.
2. Mercury
Some skin lighteners contain mercury because it is cheap and effective at removing dark spots. However some brands resort to this inexpensive element in order to reduce costs as well. The word “mercury” or mercuric can be found on the list of ingredients for many products. This means that they contain mercury and this may harm your health if too much is ingested over time.
3. Parabens
Parabens have been found to disrupt natural hormone operation, most notably estrogen. The chemical structures of these compounds are often similar which makes them extremely toxic for the human body if absorbed through skin contact. It’s hard to say whether or not parabens are safe. There seems little evidence that they cause cancer, developmental disorders and fertility issues in humans; however there is no definitive study on the effects of these ingredients. It might be worth considering your options before using them at this point given how skin pigmentation disorders can largely depend upon hormonal changes over time.
Visit Crystal Tomato and find more about skin whitening supplement/cream crystaltomato.com/the-ultimate-guide-to-skin-whitening-su...
Hector's dolphin seen from the Black Cat in Akaroa harbour, day two of my friends visit from London. I took them over the Port hills to Akaroa. We had such a beautiful day and they enjoyed the trip.
The cruise is packed with highlights including the rare, NZ native dolphin - the Hector's Dolphin, as well as penguins and other sea birds. And you'll see giant volcanic sea cliffs and hear about Akaroa's fascinating past. Cruises depart every day, weather permitting.
The Back Cat is modern catamaran, the 60 foot /20 metre Black Cat (previously the Canterbury Cat), is perfect for viewing the natural wonders of Akaroa Harbour.
For More Info: www.blackcat.co.nz/akaroa-harbour-nature-cruises.html
Hector's dolphin (Cephalorhynchus hectori) is the best-known of the four dolphins in the genus Cephalorhynchus and is found only in New Zealand. At approximately 1.4 m in length, it is one of the smallest cetaceans, and New Zealand's only endemic cetacean.
Hector’s dolphin is the smallest of the dolphins. Mature adults have a total length of 1.2–1.6 m (3 ft 10 in–5 ft 3 in) and weigh 40–60 kg (88–130 lb). The species is sexually dimorphic, with females being slightly longer and heavier than males. The body shape is stocky, with no discernible beak. The most distinctive feature is the rounded dorsal fin, with a convex trailing edge and undercut rear margin.
The overall appearance is pale grey, but closer inspection reveals a complex and elegant combination of colours. The back and sides are predominantly light grey, while the dorsal fin, flippers, and flukes are black. The eyes are surrounded by a black mask, which extends forward to the tip of the rostrum and back to the base of the flipper. A subtly shaded, crescent-shaped black band crosses the head just behind the blowhole. The throat and belly are creamy white, separated by dark-grey bands meeting between the flippers. A white stripe extends from the belly onto each flank below the dorsal fin.
At birth, Hector’s dolphin calves have a total length of 60–80 cm (24–31 in) and weigh 8–10 kg (18–22 lb). Their coloration is the same as adults, although the grey has a darker hue. Four to six vertical pale stripes, caused by fetal folds affecting the pigmentation, are present on the calf’s body until an age of about six months.
For More Info: en.wikipedia.org/wiki/Hector%27s_dolphin
Black Color Jumps Off Man; Attacks Southern Congressman
by Carl Lightman
Atlanta residents are literally taping themselves down as fear has ripped through the city. Senator John Walker (R-GA) has been hospitalized in the Dekalb County General after being beaten unmercifully by the skin color of Michael Waldrop, an African-American resident of Buckhead. Mr. Waldrop was mysteriously drained of his skin pigmentation leaving him albino. At approximately 10:30 AM, Mr. Waldrop's color detached itself from his body and assaulted Sen. Walker. Mr. Waldrop has been detained for questioning, but his color has yet to be found. One local bystander stated, "I'm terrified that I might be next. I couldn't handle being white. I hate the Gap." Police are enforcing a midnight curfew. All residents are advised to stay in well-lit areas and say tuned to BET for further updates.
Tolerance.org: Accept people for who they are. Not as you fear them to be.
Little Gull (Hydrocoloeus minutus), April 19 2020, Benthuizerplas - Zoetermeer, the Netherlands.
No pigmentation in outerwing (like adult), but note patterned underwing and mottled head pattern may indicate not full adult.
Did You Know?
Males sing complex songs on wintering grounds in Hawaii, that can last up to 20 minutes and be heard 20 miles (30 km) away!
In the Pacific, humpbacks migrate seasonally from Alaska to Hawaii--they can complete the 3,000-mile (4,830 km) trip in as few as 36 days!
Species Description:
Weight:25-40 tons (50,000-80,000 pounds; 22,000-36,000 kg);
newborns weigh about 1 ton (2,000 pounds; 900 kg)
Length:Up to 60 feet (18 m), with females larger than males;
newborns are about 15 feet (4.5 m) long
Appearance: Primarily dark grey, with some areas of white
Lifespan:About 50 years
Diet:Tiny crustaceans (mostly krill), plankton, and small fish; they can consume up to 3,000 pounds (1360 kg) of food per day
Behavior:Breaching (jumping out of the water), or slapping the surface
Humpback whales are well known for their long pectoral fins, which can be up to 15 feet (4.6 m) in length. Their scientific name, Megaptera novaeangliae, means "big-winged New Englander" as the New England population was the one best known to Europeans. These long fins give them increased maneuverability; they can be used to slow down or even go backwards.
Similar to all baleen whales, adult females are larger than adult males, reaching lengths of up to 60 feet (18 m). Their body coloration is primarily dark grey, but individuals have a variable amount of white on their pectoral fins and belly. This variation is so distinctive that the pigmentation pattern on the undersides of their "flukes" is used to identify individual whales, similar to a human fingerprint.
Humpback whales are the favorite of whale watchers, as they frequently perform aerial displays, such as breaching (jumping out of the water), or slapping the surface with their pectoral fins, tails, or heads.
In the summer, humpbacks are found in high latitude feeding grounds, such as the Gulf of Maine in the Atlantic and Gulf of Alaska in the Pacific. In the winter, they migrate to calving grounds in subtropical or tropical waters, such as the Dominican Republic in the Atlantic and the Hawaiian Islands in the Pacific. The Arabian Sea humpback does not migrate, remaining in tropical waters all year.
Humpback whales travel great distances during their seasonal migration, the farthest migration of any mammal. The longest recorded migration was 5,160 miles (8,300 km); seven animals, including a calf, completed this trek from Costa Rica to Antarctica. One of the more closely studied routes is between Alaska and Hawaii, where humpbacks have been observed making the 3,000-mile (4,830 km) trip in as few as 36 days.
During the summer months, humpbacks spend the majority of their time feeding and building up fat stores (blubber) that they will live off of during the winter. Humpbacks filter feed on tiny crustaceans (mostly krill), plankton, and small fish and can consume up to 3,000 pounds (1,360 kg) of food per day. Several hunting methods involve using air bubbles to herd, corral, or disorient fish. One highly complex variant, called "bubble netting" is unique to humpbacks. This technique is often performed in groups with defined roles for distracting, scaring, and herding before whales lunge at prey corralled near the surface.
In their wintering grounds, humpback whales congregate and engage in mating activities. Humpbacks are generally polygynous "having multiple female mates" with males exhibiting competitive behavior on wintering grounds. Aggressive and antagonistic behaviors include chasing, vocal and bubble displays, horizontal tail thrashing, and rear body thrashing. Males within these groups also make physical contact, striking or surfacing on top of one another. These bouts can cause injuries ranging from bloody scrapes to, in one recorded instance, death. Also on wintering grounds, males sing complex songs that can last up to 20 minutes and be heard 20 miles (30 km) away. A male may sing for hours, repeating the song several times. All males in a population sing the same song, but that song continually evolves over time. Humpback whale singing has been studied for decades, but scientists still understand very little about its function.
Gestation lasts for about 11 months. Newborns are 13-16 feet (4-5 m) long and grow quickly from the highly nutritious milk of their mothers. Weaning occurs between 6-10 months after birth. Mothers are protective and affectionate towards their calves, swimming close and frequently touching them with their flippers. Males do not provide parental support for calves. Breeding usually occurs once every two years, but sometimes occurs twice in a three-year span.
Habitat
During migration, humpbacks stay near the surface of the ocean.
While feeding and calving, humpbacks prefer shallow waters. During calving, humpbacks are usually found in the warmest waters available at that latitude. Calving grounds are commonly near offshore reef systems, islands, or continental shores.
Humpback feeding grounds are in cold, productive coastal waters.
Distribution
Humpback whales live in all major oceans from the equator to sub-polar latitudes.
In the North Pacific, there are at least three separate populations:
California/Oregon/Washington stock that winters in coastal Central America and Mexico and migrates to areas ranging from the coast of California to southern British Columbia in summer/fall;
Central North Pacific stock that winters in the Hawaiian Islands and migrates to northern British Columbia/ Southeast Alaska and Prince William Sound west to Kodiak; and Western North Pacific stock that winters near Japan and probably migrates to waters west of the Kodiak Archipelago (the Bering Sea and Aleutian Islands) in summer/fall. There is some mixing between these populations, though they are still considered distinct stocks.
Threats
Humpback whales face a series of threats including:
entanglement in fishing gear
Whale watch harassment
Habitat impacts
Harvest
Humpbacks can become entangled in fishing gear, either swimming off with the gear or becoming anchored. We have observed incidental "take" of humpback whales in the California/ Oregon swordfish and thresher shark drift gillnet fishery. Potential entanglement from gear from several fisheries can occur on their long migration from Hawaii to Alaska. Humpbacks in Hawaii have been observed entangled in long line gear, crab pots, and other non-fishery-related lines.
Inadvertent ship strikes can injure or kill humpbacks. Whale watching vessels may stress or even strike whales. The central North Pacific stock is the focus of a whale-watching industry on their wintering grounds in the Hawaiian Islands. The feeding aggregation in southeast Alaska is also the focus of a developing whale-watching industry that may impact whales in localized areas.
Shipping channels, fisheries, and aquaculture may occupy or destroy humpback whale aggregation areas. Recreational use of marine areas, including resort development and increased boat traffic, may displace whales that would normally use that area. In Hawaii, acoustic impacts from vessel operation, oceanographic research using active sonar, and military operations are also of increasing concern.
Source: www.nmfs.noaa.gov/pr/species/mammals/whales/humpback-whal...
Chinavia hilaris
Susquehanna State Park Rock Run
Havre de Grace, MD Harford County
bugguide.net/node/view/1251027
I would love to know if anyone has any idea why there are a few stinkbugs that show a white pigmentation?
Hima Petal soap is enriched with turmeric, tea tree oil, citrus and clove oil which helps in reducing the dark spots, pigmentation marks and Pimples.
Albino paddlefish reared at Garrison Dam National Fish Hatchery lacks usual pigmentation (2012).
Photo: USFWS
Scientific Name: Ursus maritimus
Description : Polar bears are considered the largest land carnivores in the world, matched only by very large individual Kodiak brown bears. Both sexes differ in size throughout their range; males being much larger than females and continuing to grow for a longer period of time. These bears have long, massive skulls, necks and bodies with long legs and large paws. Ears and tail are short. The nose is more prominent or “Roman†with a black rhinarium (nose pad). The tongue is black and the eyes brown. The surface of the skin is also black. Fur colour varies slightly with the season: new coats grown just prior to the winter season are very white appearing as slightly creamy white against the stark white of their icy winter environment. This pelage is thick, coarse and long with dense underfur. Guard hairs, found throughout the pelage, are shiny, almost glossy, oily and waterproof and have hollow shafts. Polar bears moult annually between the end of May and August. The coat becomes thinner and has a yellow wash or is almost a golden colour.
Male polar bears weigh between 400 – 600 kg, and have been recorded up to a maximum of 800 kg. Females are smaller than the males weighing up to 300 kg, and when pregnant up to 460 kg. Polar bears are 2.5 – 3.5 m long.
Distribution : The polar bear is circumpolar in distribution, inhabiting all Arctic seas and coastlines. It is found on the pack-ice off the Alaskan coast north of Bering Strait, off the coasts of Greenland and along the Eurasian Arctic coast from Spitsbergen to Wrangell Island. Rare stragglers reach Iceland. Individual bears have been seen on the frozen Arctic Ocean as far as latitude 88 degrees North, only 2 degrees from the North Pole. In Canada, they are found along the Arctic coasts from Alaska to Labrador and from the tip of James Bay to northern Ellesmere Island. Polar bears do roam as far as 150 kilometres inland into the coniferous forests, where they live very differently from the polar bears which belong to the high Arctic.
Habitat : They prefer areas of annual ice, which they use as a hunting platform and protective cover. This includes snow-drifted pressure ridges, refrozen cracks and areas of open water surrounded by ice. In areas where the pack ice melts by mid to late summer they come inland and live in coniferous forest areas. Here they remain until the ice re-freezes. Areas of solidly frozen sea ice and the open seas are avoided. Generally they are most common along coastal areas. Some do enter the permanent pack ice.
Food : The ringed seal is by far the most common prey. They also eat bearded seal, harp seal and hooded seal. Young walrus are sometimes taken. During the summer months they feed upon the shoreline carrion, fish, mussels, crabs, starfish, lemmings and the eggs and nestling young of waterfowl and cliff-dwelling birds. They will also graze on kelp, grasses and eat mushrooms and crowberries.
Reproduction and Development : Normally they are solitary animals outside the breeding season, the exception being a mother with cubs. Polar bears mate in mid-summer. Females first start to breed at 3 to 5 years of age. In April and May adult females are in oestrus and ready to accept a mate. They are polyandrous, meaning one female will mate with more than one male in one breeding season. Males fight among themselves for the female’s attention and a couple will pair off for a period of a few days to two weeks. With females, delayed implantation occurs, the fertilized egg does not implant in the uterus until mid-September to mid-October. Embryonic development begins at this time. Gestation periods, therefore, vary a great deal when including this period of delay. Females choose suitable locations to build their maternity dens in mid-October and retreat to them for the winter season. They give birth to one to four cubs somewhere between late November and early January. Twins are most common. The newborns are small; 25 to 30 cm long and weigh less than 1 kg. They are covered with very fine hair, appearing almost naked and their eyes are closed. Their eyes open at 6 weeks. Growth is very quick; at two months their fur has thickened; they weigh about 5 kg and move about the den. By mid-March to early April, when the den is opened, the cubs weigh about 10 kg and are surprisingly strong. The cubs suckle for nine months, occasionally one year. They are very dependent on their mother and stay with her for two years. At that time they weigh 90 - 180 kg and are half grown.
Adaptations : Polar bears are wonderfully adapted to their Arctic surroundings.
Locomotion. On land a shuffling walk may be increased to a rolling gallop of 40 km/h and can outrun caribou over a short distance. Bears are often seen standing high on their hind legs, necks stretched to scan the landscape. On thin ice, legs are spread to distribute body mass. Thickly padded and furred soles allow the bear to move quietly as well as providing good traction. Small bumps and cavities on the soles act like suction cups keeping bears from slipping on the ice. The claws are used to dig into icy slopes and to grip prey. They are strong swimmers, paddling with their forefeet only and trailing their hind feet which act as a rudder. They can stay submerged for over one minute, keeping their eyes open. They swim at a speed of approximately 6.4 km/h, often covering long distances.
Insulation. Polar bears have a thick layer of sub-cutaneous fat and very dense underfur with several layers of glossy guard hair on the outside. Their pelt is much thicker in winter and provides excellent insulation. The fat layer also adds to buoyancy in the water. Water is shed easily from the oily waterproof fur. Small, furry ears have a heavy network of blood vessels, keeping them warm and conserving heat. The tail is short and rounded also conserving heat. Fur is very dense around the soles of the feet.
Pelage. The creamy white appearance of the coat allows the bear to be inconspicuous when hunting seal. Each hair is similar to an optical fibre; colourless and hollow. Being translucent, it reflects the heat from the sun down to the base of the hair, where it is absorbed by the black skin. Whiteness comes from reflection of light rather than pigmentation.
Hunting. Bears use their keen sense of smell to detect seal breathing holes. These can be up to a kilometer away and covered by a layer of snow and ice. They will stand or lie by the seal’s blowhole in the ice for hours; they may swim towards seals resting on the ice flows with only their nose showing above the water. They will dive quietly, then swim up to the ice edge and jump out on the seal, and will also crawl towards a sunbathing seal using every piece of raised ice to conceal the approach.
Denning. Both sexes occupy dens for shelter. Topographic factors influence the den sites. In Canadian core areas, dens frequently occur on south-facing slopes where northerly prevailing winds create the best drifts, where the wind-chill is least and insulation from received solar radiation is greatest. One of the three largest denning areas worldwide is in Canada. There are three main types of winter refuges: maternity dens, temporary dens and winter shelters. During the winter any bear may dig a temporary den and use it for a few days during a storm, or take shelter in a natural cavity. Winter shelters are used for longer periods of time as resting places. This type of shelter is usually roomier with additional features such as alcoves, porches and ventilation holes. Bears do not hibernate in the strict sense of the word; they have the ability to slow down their metabolism to conserve energy at any time of year. The state of self-induced lethargy while in the shelter allows them to preserve their vital fat reserves. During this time, the body temperature of the polar bear decreases by a few degrees from normal and the respiration rates are markedly reduced. Maternity dens are built and occupied by pregnant females and can vary in size. The denning chamber is at the upper end of an entrance tunnel 1 to 2 m long. It averages 1.5 m in diameter with a height of 90 to 100cm in the middle. Drifting snow seals the entrance. The chamber is higher than the tunnel, trapping bear body heat inside. Dens not only provide a safe place to give birth to her cubs, but are also a place of protection for the cubs during their first few months. During this time she does not leave the den, remaining with her cubs and living on her reserves of fat. In the spring, with her fat severely depleted she must leave to find food to sustain herself and her cubs. After they leave the maternity den she will build temporary refuges in which to nurse, rest and shelter her young cubs and warms them as they all sleep together. She heads with her cubs towards the nearest supply of food, usually towards pack ice.
Sight and sounds. Polar bears have good eyesight. Their eyes have inner eyelids that keep the glare of the sun on snow and ice from blinding them. When defending a food source from other bears they use a deep growl. They hiss and snort to show aggression. Angry bears use loud roars and growls. Mothers scold cubs with a low growl.
Threats to Survival : Polar bears are one of the animals most threatened by global warming. They depend entirely on sea ice as a platform from which to hunt seals. Reduction of the total ice cover in the Arctic is a serious concern globally. When the ice does not form or forms too late in the season many polar bears starve. In Hudson Bay, scientists have found the main cause of death for cubs to be either lack of food or lack of fat on nursing mothers. Exploitation of minerals and fossil fuels in the Arctic pose a continuous threat. Of the oil and natural gas deposits globally, 20% are located in the Arctic. As the ice cap recedes these become more accessible. Countries are competing which each other in claiming ownership of Arctic and its resources. This can only result in further and more drastic impact on polar bear habitat.
Status : IUCN: Vulnerable; CITES: Appendix II; COSEWIC: Special Concern
Zoo Diet : Toronto Zoo carnivore diet, dog chow, jumbo smelt and herring, carrots, bean sprouts, Vitamin E and Thiamine supplements.
Toronto Zoo Website
Given that I was in Louisville for the NBDCC 2025 (National Barbie Doll Collectors Convention), I decided (after hemming and hawing) to drive the hour and forty-five minutes to Bowling Green to try to find the white squirrels on campus. I was told they are all over, but you have decent odds trying at the WKU campus. So off I went. After arriving early (benefiting from the time change to Central), I walked around and noticed a number of Eastern Grey Squirrels on campus, but for the first hour, any white ones were elusive. Then by the Housing and Residence Life building (and the Centennial Mall), I noticed a bright white object moving. I found one! This little guy (little chance to mistake that) was probably the only one I saw. I moved around and did not find any others - but got some great pictures of this little charmer.
FWIW, the white squirrels in Bowling Green, Kentucky are leucistic. A leucistic squirrel has a condition that leads to a partial loss of pigmentation. The distinction between leucistic squirrels and albino squirrels is typically in the eyes. If they have dark eyes and are white or mostly white or off-white, they have leucism. A great squirrel tourism campus indeed! Taken on Friday June 27th, 2025 in Bowling Green, Kentucky.
The edges of the lobes in this thallose liverwort can look more or less black, but a closer inspection shows layers of cells with a strong red pigmentation.
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Scientific Name: Ursus maritimus
Description : Polar bears are considered the largest land carnivores in the world, matched only by very large individual Kodiak brown bears. Both sexes differ in size throughout their range; males being much larger than females and continuing to grow for a longer period of time. These bears have long, massive skulls, necks and bodies with long legs and large paws. Ears and tail are short. The nose is more prominent or “Roman†with a black rhinarium (nose pad). The tongue is black and the eyes brown. The surface of the skin is also black. Fur colour varies slightly with the season: new coats grown just prior to the winter season are very white appearing as slightly creamy white against the stark white of their icy winter environment. This pelage is thick, coarse and long with dense underfur. Guard hairs, found throughout the pelage, are shiny, almost glossy, oily and waterproof and have hollow shafts. Polar bears moult annually between the end of May and August. The coat becomes thinner and has a yellow wash or is almost a golden colour.
Male polar bears weigh between 400 – 600 kg, and have been recorded up to a maximum of 800 kg. Females are smaller than the males weighing up to 300 kg, and when pregnant up to 460 kg. Polar bears are 2.5 – 3.5 m long.
Distribution : The polar bear is circumpolar in distribution, inhabiting all Arctic seas and coastlines. It is found on the pack-ice off the Alaskan coast north of Bering Strait, off the coasts of Greenland and along the Eurasian Arctic coast from Spitsbergen to Wrangell Island. Rare stragglers reach Iceland. Individual bears have been seen on the frozen Arctic Ocean as far as latitude 88 degrees North, only 2 degrees from the North Pole. In Canada, they are found along the Arctic coasts from Alaska to Labrador and from the tip of James Bay to northern Ellesmere Island. Polar bears do roam as far as 150 kilometres inland into the coniferous forests, where they live very differently from the polar bears which belong to the high Arctic.
Habitat : They prefer areas of annual ice, which they use as a hunting platform and protective cover. This includes snow-drifted pressure ridges, refrozen cracks and areas of open water surrounded by ice. In areas where the pack ice melts by mid to late summer they come inland and live in coniferous forest areas. Here they remain until the ice re-freezes. Areas of solidly frozen sea ice and the open seas are avoided. Generally they are most common along coastal areas. Some do enter the permanent pack ice.
Food : The ringed seal is by far the most common prey. They also eat bearded seal, harp seal and hooded seal. Young walrus are sometimes taken. During the summer months they feed upon the shoreline carrion, fish, mussels, crabs, starfish, lemmings and the eggs and nestling young of waterfowl and cliff-dwelling birds. They will also graze on kelp, grasses and eat mushrooms and crowberries.
Reproduction and Development : Normally they are solitary animals outside the breeding season, the exception being a mother with cubs. Polar bears mate in mid-summer. Females first start to breed at 3 to 5 years of age. In April and May adult females are in oestrus and ready to accept a mate. They are polyandrous, meaning one female will mate with more than one male in one breeding season. Males fight among themselves for the female’s attention and a couple will pair off for a period of a few days to two weeks. With females, delayed implantation occurs, the fertilized egg does not implant in the uterus until mid-September to mid-October. Embryonic development begins at this time. Gestation periods, therefore, vary a great deal when including this period of delay. Females choose suitable locations to build their maternity dens in mid-October and retreat to them for the winter season. They give birth to one to four cubs somewhere between late November and early January. Twins are most common. The newborns are small; 25 to 30 cm long and weigh less than 1 kg. They are covered with very fine hair, appearing almost naked and their eyes are closed. Their eyes open at 6 weeks. Growth is very quick; at two months their fur has thickened; they weigh about 5 kg and move about the den. By mid-March to early April, when the den is opened, the cubs weigh about 10 kg and are surprisingly strong. The cubs suckle for nine months, occasionally one year. They are very dependent on their mother and stay with her for two years. At that time they weigh 90 - 180 kg and are half grown.
Adaptations : Polar bears are wonderfully adapted to their Arctic surroundings.
Locomotion. On land a shuffling walk may be increased to a rolling gallop of 40 km/h and can outrun caribou over a short distance. Bears are often seen standing high on their hind legs, necks stretched to scan the landscape. On thin ice, legs are spread to distribute body mass. Thickly padded and furred soles allow the bear to move quietly as well as providing good traction. Small bumps and cavities on the soles act like suction cups keeping bears from slipping on the ice. The claws are used to dig into icy slopes and to grip prey. They are strong swimmers, paddling with their forefeet only and trailing their hind feet which act as a rudder. They can stay submerged for over one minute, keeping their eyes open. They swim at a speed of approximately 6.4 km/h, often covering long distances.
Insulation. Polar bears have a thick layer of sub-cutaneous fat and very dense underfur with several layers of glossy guard hair on the outside. Their pelt is much thicker in winter and provides excellent insulation. The fat layer also adds to buoyancy in the water. Water is shed easily from the oily waterproof fur. Small, furry ears have a heavy network of blood vessels, keeping them warm and conserving heat. The tail is short and rounded also conserving heat. Fur is very dense around the soles of the feet.
Pelage. The creamy white appearance of the coat allows the bear to be inconspicuous when hunting seal. Each hair is similar to an optical fibre; colourless and hollow. Being translucent, it reflects the heat from the sun down to the base of the hair, where it is absorbed by the black skin. Whiteness comes from reflection of light rather than pigmentation.
Hunting. Bears use their keen sense of smell to detect seal breathing holes. These can be up to a kilometer away and covered by a layer of snow and ice. They will stand or lie by the seal’s blowhole in the ice for hours; they may swim towards seals resting on the ice flows with only their nose showing above the water. They will dive quietly, then swim up to the ice edge and jump out on the seal, and will also crawl towards a sunbathing seal using every piece of raised ice to conceal the approach.
Denning. Both sexes occupy dens for shelter. Topographic factors influence the den sites. In Canadian core areas, dens frequently occur on south-facing slopes where northerly prevailing winds create the best drifts, where the wind-chill is least and insulation from received solar radiation is greatest. One of the three largest denning areas worldwide is in Canada. There are three main types of winter refuges: maternity dens, temporary dens and winter shelters. During the winter any bear may dig a temporary den and use it for a few days during a storm, or take shelter in a natural cavity. Winter shelters are used for longer periods of time as resting places. This type of shelter is usually roomier with additional features such as alcoves, porches and ventilation holes. Bears do not hibernate in the strict sense of the word; they have the ability to slow down their metabolism to conserve energy at any time of year. The state of self-induced lethargy while in the shelter allows them to preserve their vital fat reserves. During this time, the body temperature of the polar bear decreases by a few degrees from normal and the respiration rates are markedly reduced. Maternity dens are built and occupied by pregnant females and can vary in size. The denning chamber is at the upper end of an entrance tunnel 1 to 2 m long. It averages 1.5 m in diameter with a height of 90 to 100cm in the middle. Drifting snow seals the entrance. The chamber is higher than the tunnel, trapping bear body heat inside. Dens not only provide a safe place to give birth to her cubs, but are also a place of protection for the cubs during their first few months. During this time she does not leave the den, remaining with her cubs and living on her reserves of fat. In the spring, with her fat severely depleted she must leave to find food to sustain herself and her cubs. After they leave the maternity den she will build temporary refuges in which to nurse, rest and shelter her young cubs and warms them as they all sleep together. She heads with her cubs towards the nearest supply of food, usually towards pack ice.
Sight and sounds. Polar bears have good eyesight. Their eyes have inner eyelids that keep the glare of the sun on snow and ice from blinding them. When defending a food source from other bears they use a deep growl. They hiss and snort to show aggression. Angry bears use loud roars and growls. Mothers scold cubs with a low growl.
Threats to Survival : Polar bears are one of the animals most threatened by global warming. They depend entirely on sea ice as a platform from which to hunt seals. Reduction of the total ice cover in the Arctic is a serious concern globally. When the ice does not form or forms too late in the season many polar bears starve. In Hudson Bay, scientists have found the main cause of death for cubs to be either lack of food or lack of fat on nursing mothers. Exploitation of minerals and fossil fuels in the Arctic pose a continuous threat. Of the oil and natural gas deposits globally, 20% are located in the Arctic. As the ice cap recedes these become more accessible. Countries are competing which each other in claiming ownership of Arctic and its resources. This can only result in further and more drastic impact on polar bear habitat.
Status : IUCN: Vulnerable; CITES: Appendix II; COSEWIC: Special Concern
Zoo Diet : Toronto Zoo carnivore diet, dog chow, jumbo smelt and herring, carrots, bean sprouts, Vitamin E and Thiamine supplements.
Toronto Zoo Website
Due to a pigmentation called "erythrism", some Meadow Grasshoppers appear pink, and apparently the chances of you seeing one are 1%, so these are the 1%!
Photos taken outside RAF Valley, Anglesey, on Monday 5th September 2022. ©JTW Aviation Images.
Saw this bird out of the corner of my eye when I was taking a photograph of the Wallace Monument from the the grassed area in front of Stirling Castle.
A local said it was a blackbird and that there are many in the area displaying this lack of pigmentation
Some of these baby iguanas had depigmented skins. I've never seen an adult so lightly colored, so I figure it's just developmental variability.
This was a nesting ground on an isolated islet off the coast of Isabela. In the background is a small channel full of white tip sharks. I figured they were waiting for baby iguanas to clamber in and get a nice meal, but our guides said the sharks were merely resting in the calm waters and rarely feed on iguanas. Darwin hypothesized that the reason you can't scare a marine iguana into the water is because that's were its only predators are (thet are actually predated by hawks on land too though). A more likely reason would probably be that diving into the water forces one to loose copious amounts of body heat. Only large marine iguanas will dive into the water to feed, as they can retain body heat more easily, and smaller iguanas will feed more in the intertidal zones during low tide. This also helps explain their dark pigmentations, which would help gain heat rapidly during basking after a cold swim.
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An exquisite processional ‘Mater Dolorosa’ figure in glorious robes
Estimate: PHP 700,000 - 750,000
18th century
Bicol
Molave wood, polychrome and paint, gesso
112 x 35 x 26 cm (44 x 13 3/4 x 10 1/4 in)
This is a superlative depiction of the Virgin Mary as the ‘Mater Dolorosa’ or the Sorrowful Mother. Exquisitely carved in classical style, she exhibits unfeigned hallmarks found in diminishing 18th century specimens. She has strong facial features – swelling ‘pop’ eyes, long pointed nose, and slightly gaping mouth. The beautiful rendition of the crisp folds, deep crevices and texture of her robes, and the protruding clasped hands as she pulls them away from her center, heightens the dynamic movement and energy to her contrapposto pose as she leans to her left. The original blue and red pigmentations are visible through the many layers of overcoat paint over the centuries, with the topmost layers remaining strong and vibrant. Blue and red were the traditional colors of 17th and 18th century Virgin Mary depictions in art produced in Spanish colonies, including Mexico and the Philippines; they’re the same colors favored and followed sympathetically by the Bicol school.
As a processional image, a substantial portion of the back was hollowed out to reduce its overall weight and minimize the movement of the wood as it swells and contracts due to humidity fluctuations that can result in cracks to develop. There are holed-out openings at the base – two in front and two at the back – wherein thick abaca ropes passed through to secure the image to the carozza. Nails on her shoulders, meanwhile, were used to anchor her to the wall to prevent it from toppling over.
Lot 276 of the Salcedo Auctions live and online auction on 8 March 2025. For more information and to place an online bid, please see www.salcedoauctions.com
You know, sometimes I wonder, I have no fear of these caterpillars no matter how icky they are, but show me a moth, and I'll run away like a little girl!
I found this caterpillar by chance on a plant and I noticed the blue pigmentation and that's when I thought it'd be cool to shoot it! (with my D60 of course)
Dark circles laser treatment are not actually harmful but can give your face a dull & untidy look so it is important that they should be removed with some effective methods.
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Scientific Name: Ursus maritimus
Description : Polar bears are considered the largest land carnivores in the world, matched only by very large individual Kodiak brown bears. Both sexes differ in size throughout their range; males being much larger than females and continuing to grow for a longer period of time. These bears have long, massive skulls, necks and bodies with long legs and large paws. Ears and tail are short. The nose is more prominent or “Roman†with a black rhinarium (nose pad). The tongue is black and the eyes brown. The surface of the skin is also black. Fur colour varies slightly with the season: new coats grown just prior to the winter season are very white appearing as slightly creamy white against the stark white of their icy winter environment. This pelage is thick, coarse and long with dense underfur. Guard hairs, found throughout the pelage, are shiny, almost glossy, oily and waterproof and have hollow shafts. Polar bears moult annually between the end of May and August. The coat becomes thinner and has a yellow wash or is almost a golden colour.
Male polar bears weigh between 400 – 600 kg, and have been recorded up to a maximum of 800 kg. Females are smaller than the males weighing up to 300 kg, and when pregnant up to 460 kg. Polar bears are 2.5 – 3.5 m long.
Distribution : The polar bear is circumpolar in distribution, inhabiting all Arctic seas and coastlines. It is found on the pack-ice off the Alaskan coast north of Bering Strait, off the coasts of Greenland and along the Eurasian Arctic coast from Spitsbergen to Wrangell Island. Rare stragglers reach Iceland. Individual bears have been seen on the frozen Arctic Ocean as far as latitude 88 degrees North, only 2 degrees from the North Pole. In Canada, they are found along the Arctic coasts from Alaska to Labrador and from the tip of James Bay to northern Ellesmere Island. Polar bears do roam as far as 150 kilometres inland into the coniferous forests, where they live very differently from the polar bears which belong to the high Arctic.
Habitat : They prefer areas of annual ice, which they use as a hunting platform and protective cover. This includes snow-drifted pressure ridges, refrozen cracks and areas of open water surrounded by ice. In areas where the pack ice melts by mid to late summer they come inland and live in coniferous forest areas. Here they remain until the ice re-freezes. Areas of solidly frozen sea ice and the open seas are avoided. Generally they are most common along coastal areas. Some do enter the permanent pack ice.
Food : The ringed seal is by far the most common prey. They also eat bearded seal, harp seal and hooded seal. Young walrus are sometimes taken. During the summer months they feed upon the shoreline carrion, fish, mussels, crabs, starfish, lemmings and the eggs and nestling young of waterfowl and cliff-dwelling birds. They will also graze on kelp, grasses and eat mushrooms and crowberries.
Reproduction and Development : Normally they are solitary animals outside the breeding season, the exception being a mother with cubs. Polar bears mate in mid-summer. Females first start to breed at 3 to 5 years of age. In April and May adult females are in oestrus and ready to accept a mate. They are polyandrous, meaning one female will mate with more than one male in one breeding season. Males fight among themselves for the female’s attention and a couple will pair off for a period of a few days to two weeks. With females, delayed implantation occurs, the fertilized egg does not implant in the uterus until mid-September to mid-October. Embryonic development begins at this time. Gestation periods, therefore, vary a great deal when including this period of delay. Females choose suitable locations to build their maternity dens in mid-October and retreat to them for the winter season. They give birth to one to four cubs somewhere between late November and early January. Twins are most common. The newborns are small; 25 to 30 cm long and weigh less than 1 kg. They are covered with very fine hair, appearing almost naked and their eyes are closed. Their eyes open at 6 weeks. Growth is very quick; at two months their fur has thickened; they weigh about 5 kg and move about the den. By mid-March to early April, when the den is opened, the cubs weigh about 10 kg and are surprisingly strong. The cubs suckle for nine months, occasionally one year. They are very dependent on their mother and stay with her for two years. At that time they weigh 90 - 180 kg and are half grown.
Adaptations : Polar bears are wonderfully adapted to their Arctic surroundings.
Locomotion. On land a shuffling walk may be increased to a rolling gallop of 40 km/h and can outrun caribou over a short distance. Bears are often seen standing high on their hind legs, necks stretched to scan the landscape. On thin ice, legs are spread to distribute body mass. Thickly padded and furred soles allow the bear to move quietly as well as providing good traction. Small bumps and cavities on the soles act like suction cups keeping bears from slipping on the ice. The claws are used to dig into icy slopes and to grip prey. They are strong swimmers, paddling with their forefeet only and trailing their hind feet which act as a rudder. They can stay submerged for over one minute, keeping their eyes open. They swim at a speed of approximately 6.4 km/h, often covering long distances.
Insulation. Polar bears have a thick layer of sub-cutaneous fat and very dense underfur with several layers of glossy guard hair on the outside. Their pelt is much thicker in winter and provides excellent insulation. The fat layer also adds to buoyancy in the water. Water is shed easily from the oily waterproof fur. Small, furry ears have a heavy network of blood vessels, keeping them warm and conserving heat. The tail is short and rounded also conserving heat. Fur is very dense around the soles of the feet.
Pelage. The creamy white appearance of the coat allows the bear to be inconspicuous when hunting seal. Each hair is similar to an optical fibre; colourless and hollow. Being translucent, it reflects the heat from the sun down to the base of the hair, where it is absorbed by the black skin. Whiteness comes from reflection of light rather than pigmentation.
Hunting. Bears use their keen sense of smell to detect seal breathing holes. These can be up to a kilometer away and covered by a layer of snow and ice. They will stand or lie by the seal’s blowhole in the ice for hours; they may swim towards seals resting on the ice flows with only their nose showing above the water. They will dive quietly, then swim up to the ice edge and jump out on the seal, and will also crawl towards a sunbathing seal using every piece of raised ice to conceal the approach.
Denning. Both sexes occupy dens for shelter. Topographic factors influence the den sites. In Canadian core areas, dens frequently occur on south-facing slopes where northerly prevailing winds create the best drifts, where the wind-chill is least and insulation from received solar radiation is greatest. One of the three largest denning areas worldwide is in Canada. There are three main types of winter refuges: maternity dens, temporary dens and winter shelters. During the winter any bear may dig a temporary den and use it for a few days during a storm, or take shelter in a natural cavity. Winter shelters are used for longer periods of time as resting places. This type of shelter is usually roomier with additional features such as alcoves, porches and ventilation holes. Bears do not hibernate in the strict sense of the word; they have the ability to slow down their metabolism to conserve energy at any time of year. The state of self-induced lethargy while in the shelter allows them to preserve their vital fat reserves. During this time, the body temperature of the polar bear decreases by a few degrees from normal and the respiration rates are markedly reduced. Maternity dens are built and occupied by pregnant females and can vary in size. The denning chamber is at the upper end of an entrance tunnel 1 to 2 m long. It averages 1.5 m in diameter with a height of 90 to 100cm in the middle. Drifting snow seals the entrance. The chamber is higher than the tunnel, trapping bear body heat inside. Dens not only provide a safe place to give birth to her cubs, but are also a place of protection for the cubs during their first few months. During this time she does not leave the den, remaining with her cubs and living on her reserves of fat. In the spring, with her fat severely depleted she must leave to find food to sustain herself and her cubs. After they leave the maternity den she will build temporary refuges in which to nurse, rest and shelter her young cubs and warms them as they all sleep together. She heads with her cubs towards the nearest supply of food, usually towards pack ice.
Sight and sounds. Polar bears have good eyesight. Their eyes have inner eyelids that keep the glare of the sun on snow and ice from blinding them. When defending a food source from other bears they use a deep growl. They hiss and snort to show aggression. Angry bears use loud roars and growls. Mothers scold cubs with a low growl.
Threats to Survival : Polar bears are one of the animals most threatened by global warming. They depend entirely on sea ice as a platform from which to hunt seals. Reduction of the total ice cover in the Arctic is a serious concern globally. When the ice does not form or forms too late in the season many polar bears starve. In Hudson Bay, scientists have found the main cause of death for cubs to be either lack of food or lack of fat on nursing mothers. Exploitation of minerals and fossil fuels in the Arctic pose a continuous threat. Of the oil and natural gas deposits globally, 20% are located in the Arctic. As the ice cap recedes these become more accessible. Countries are competing which each other in claiming ownership of Arctic and its resources. This can only result in further and more drastic impact on polar bear habitat.
Status : IUCN: Vulnerable; CITES: Appendix II; COSEWIC: Special Concern
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Toronto Zoo Website
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Bolivia, Flamencos, Laguna Colorada (Surface elevation 4,278 m)
Laguna Colorada (Red Lagoon) is a shallow salt lake in the southwest of the altiplano of Bolivia, within Eduardo Avaroa Andean Fauna National Reserve and close to the border with Chile.
The lake contains borax islands, whose white color contrasts with the reddish color of its waters, which is caused by red sediments and pigmentation of some algae.
Laguna Colorada is part of the Los Lípez (formerly Laguna Colorada) Ramsar wetland. It was listed as a "Ramsar Wetland of International Importance" in 1990. On, July 13, 2009 the site was expanded from 513.18 to 14,277.17 km2 (5,512.45 sq mi) to include the surrounding high Andean endorheic, hypersaline and brackish lakes and associated wetlands
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Laguna Colorada
Laguna Colorada (Red Lagoon) is a shallow salt lake in the southwest of the altiplano of Bolivia, within Eduardo Avaroa Andean Fauna National Reserve
The lake contains borax islands, whose white color contrasts nicely with the reddish color of its waters, which is caused by red sediments and pigmentation of some algae.
James's Flamingos abound in the area. Also it is possible to find Andean and Chilean flamingos, but in a minor quantity.
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