Testosterone Tuesday
View allAll Photos Tagged testosterone
A Mute Swan on the charge. Even as early as February, testosterone levels start rising and aggression and territorialty start ramping up, chasing off rivals and generally showing off
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The razorbill is a medium-sized seabird. It is black above and white below. It has a thick black beak which is deep and blunt, unlike the thinner bill of the similar guillemot. It breeds around the coast of the UK, with the largest colonies in northern Scotland. There are none breeding between the Humber and the Isle of Wight. Birds only come to shore to breed and winter in the northern Atlantic.
Taken at Bempton Cliffs, Flamborough Head, North Yorkshire
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The razorbill is a medium-sized seabird. It is black above and white below. It has a thick black beak which is deep and blunt, unlike the thinner bill of the similar guillemot. It breeds around the coast of the UK, with the largest colonies in northern Scotland. There are none breeding between the Humber and the Isle of Wight. Birds only come to shore to breed and winter in the northern Atlantic.
Taken at Bempton Cliffs, Flamborough Head, North Yorkshire
these 'bachelor' groups will soon break up as fall rut approaches and testosterone builds and the battles begin...
rocky mountains, fencing in the background is temporary to help reestablish foliage in the area of the stream flow otherwise elk and moose tend to over graze these areas which emphasizes need to maintain predators (man or otherwise) to control over population growth....
... Unless you’re an Elk
Came across this Cutie while on a 2017 road trip through Oregon. She noticed the California License Plate and expressed her opinion of this tourist messing around in her state : )
As one of the largest mammals in North America, elk are noticeably larger than deer. Female elk, called cows, weigh around 500 pounds; males can weigh over 700 pounds. Males generally lose weight during the intense breeding season, weighing less in the winter than during other times of the year.
The Shawnee name for elk is Wapiti, meaning "white rump" because of the characteristic patch of lighter beige hair on an otherwise copper brown colored body. Their legs and neck are often darker than the rest of their body.
Male elk, or bulls, are the only ones that have antlers. They begin growing in the spring and fall off, or shed, each winter. While growing, the antlers are covered with a soft layer of skin called "velvet," which is shed in the summer. Bull elk can sometimes be seen lowering their heads and knocking antlers, an activity that allows them to compete for the attentions of cows and build strength. This behavior usually occurs during the mating season, or rut, which takes place in the fall. During the rut, bulls experience a dramatic increase in testosterone, making the more aggressive and likely to exhibit dominant behavior.
Cows generally give birth to one calf, though they may upon rare occasions produce twins. Calves are born between May and June each year after a gestation period of roughly 8.5 months. Calves average 35 pounds and birth and stay with their mother until the following spring, when the next cycles of calves are born. They are born both spotted and scentless in order to protect them from predators.
- Wikipedia
(Nikon D7200, 80-400/5.6 @ 400mm, 1/640 @ f/5.6, ISO 320)
Two male Red-winged Blackbirds manage to disagree in dense fog.
As shot this morning from the deck blind. Yeah, should have upped the shutter speed... Hindsight!
While landscapes are my primary photographic objective I pack 2 cameras in case I get lucky and see wildlife. This proud elk was standing in the Madison River while looking at his wandering herd who had wandered further downstream. Got lucky this day.
An elks impressive antlers draw a lot of attention, as they should....did you know:
"An elk’s antlers – which only grow on bulls – don’t just look cool. They’re made of fast-growing bone. How fast? Well, they’ve been known to grow as much as one inch in one day. This rapid pace has led some scientists to suggest that studying elk’s antlers might give us some help in the fight against certain types of cancer in humans. The size of an elk’s antlers depends on the amount of sunlight the elk gets; sunlight causes a boost in testosterone levels, causing the antlers to grow. They can weigh as much as 40 pounds in a full grown male." visitestespark.com
So like we photogs may the light be with them!
Side-blotched Lizard (Uta stansburiana).from the Channel Islands National Park. Was trying hard to photograph the Island Fence Lizard that is endemic to Channel Islands but it wouldn't be cooperative - well that's their loss! So lets take this opportunity to sing the praises of the side blotch lizard! They have a cool mating hierarchy discovered by biologists from the University of California, Santa Cruz. Its best described as a rock-paper-scissors strategy. Males have either orange, blue, or yellow throats and each type follows a fixed, heritable mating strategy. Orange-throated males are strongest and do not form strong pair bonds; instead, they fight blue-throated males for their females. Yellow-throated males, however, manage to snatch females away from them for mating. The large size and aggression is caused by high testosterone production. Blue-throated males are middle-sized and form strong pair bonds. While they are outcompeted by orange-throated males, they can defend against yellow-throated ones. Because blue-throated males produce less testosterone they are not as large as the orange-throated males, but it gives them the advantage of being less aggressive and able to form strong pair bonds. Yellow-throated males are smallest, and their coloration mimics females. This lets them approach females near orange-throated males and mate when the males are distracted. This is less likely to work with a female that has bonded with a blue-throated male. This can be summarized as "orange beats blue, blue beats yellow, and yellow beats orange", which is similar to the rules of rock-paper-scissors.
Although on a deer park, rather than the wilds of Scotland, this master of the rut still cut an impressive sight.
It's early days yet, but he still had his work cut out fending off rivals including a few cheeky young chancers half his size.
Red Deer Stag - Cervus Elaphus
Studley Royal Deer Park - Yorkshire
As always I am grateful to all those who kindly take time to comment on and fave my photographs.
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The fallow deer rut is in full swing over here.
These bundles of testosterone were putting on a display and challenging each other all morning long. As a result, they didn't pay much attention to me and I was able to get relatively close to get some shots.
Beak color is often an indication of health related to carotenoids and testosterone. Apparently, a very healthy goldfinch!
Meadow Pipits are becoming more obvious and perching on posts as well as performing song-flights. Testosterone levels are rising with the temperature
Cervus elaphus
Studley Royal deer park
The bellow is to warn away intruding stags to the stags own harem, or to keep its hinds in order during the Autumn rut.
A Red deer with 12 points (six per antler) to his antler is called a “Royal stag”, while 14 points make an “Imperial stag” and an animal with 16 points or more is referred to as a “Monarch”.
The antlers are testosterone-driven and as the stag's testosterone levels drop in the autumn, the velvet is shed and the antlers stop growing. With the approach of autumn, the antlers begin to calcify and the stags' testosterone production builds for the approaching rut (mating season).
This bull elk seemed to be weary of packing his impressive antlers. He gave me a sad look. Easy to understand, as they can weigh up to 40 pounds.
An elk’s antlers can grow more than an inch a day in the summer. The amount of antler growth an elk undergoes, as well as total antler size, depends on how soon and how much sunlight the bull gets. Sunlight elevates testosterone in bulls, which in turn triggers the growth of antlers.
Thanks for taking a look!
May your load be light this week!
Two young bulls with high testosterone level. Kruger national park.
Thanks for visits, faves and comments!!
Indigo buntings are a species that have often evaded pretty much every lens I own, camera or otherwise. While not necessarily retiring, they can be a bit wary, or at least they were whenever I tried to focus on them. However, I found out that all that wariness flies the coop at this time of year, when males are feuding with each other. The flowing testosterone probably has something to do with it, I reckon. Either way, this guy was a big fan of this perch, which yielded the best looks and photos I’ve gotten of this species to date, despite being quite common and a regular breeder.
Cervus elaphus
Studley Royal deer park
The bellow is to warn away intruding stags to the stags own harem, or to keep its hinds in order during the Autumn rut.
A Red deer with 12 points (six per antler) to his antler is called a “Royal stag”, while 14 points make an “Imperial stag” and an animal with 16 points or more is referred to as a “Monarch”.
The antlers are testosterone-driven and as the stag's testosterone levels drop in the autumn, the velvet is shed and the antlers stop growing. With the approach of autumn, the antlers begin to calcify and the stags' testosterone production builds for the approaching rut (mating season).
Pelicans, flush with their breeding plumes congregate on the cliffs at Año Nuevo Preserve. This was breeding season along the the coast, and the pelicans were here in force congregating on every available cliff and hillside looking for their perfect mate. Just around the corner the elephant seals were doing the same thing. The air was so full of testosterone you could smell it.
San Mateo County CA
The beauty of a testosterone fueled stag in full flow.
This guy was the master of the rut and woe betide anyone foolish enough to challenge him.
Red Deer Stag - Cervus Elaphus
Studley Royal Deer Park - Yorkshire
As always I am grateful to all those who kindly take time to comment on and fave my photographs.
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DSC_3909. Bronsttijd op de Hoge Veluwe ( a nature reserve in The Netherlands).! Rutting season at nature reserve De Hoge Veluwe in the Netherlands.
Copyright: Robert Kok. All rights reserved!
Please do not use my photos on websites, blogs or in any other media without my explicit permission.
Thanks for visiting, commenting and faving my photos. Its very much appreciated!
Black-tailed Deer (Odocoileus hemionus columbianus)
I came upon these two youngish bucks during rut a few years ago. Without a doe anywhere in sight they did a little friendly sparring for what I can only assume was practice and perhaps venting a little testosterone build up. After a few minutes of wrestling the downhill looser spent a moment or two grooming the victor.
Siskiyou Mountains - Jackson County - Southern Oregon
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Coot's are everywhere., and most the year are just 'part of the lakeside' furniture
Come spring time and all of that changes
Fights., posturing., and chasing off virtually anything that comes near their mates., it's a testosterone fuelled festival of aggression and male vitality and it makes for great entertainment
Of course they also become an irresistible 'target' for some fun photography
When the lights go out literally or metaphorically... or
when you wear all-black clothing against a black background !
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Macro mondays theme: corner
It's a part of the door to my "Gentleman's room". The only 20qm in my house, where testosterone rules... yet
manual setup and focus, avilable light, handheld. Hope, you enjoy!
Thank you Flickr gor the Explore!
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Last in the series of explorations into a contemporary use of Dada aesthetics, ideas and method, all on a digital platform. Why do this? It's a balance thing. AI is all the rage now and it's providing some stunning images but I still haven't warmed to the idea of creating visual images solely or mostly through words and algorithms. Chance, accident and intuition are a good balance to this and always a solution when the left brain dominates.
Logo-centricity has been declared a "Male" attribute. But I quietly question that. So here I punned on the word 'testosterone" as I put together a very 'masculine' image. Male faces, maps, cars, words and numbers ...
Image created April 29, 2023.
Zoom in for a more immersive view.
All images were taken by me and cropped or manipulated as independent pieces. They were randomly pulled from my archives and collaged here in a single piece.
In "The Kreative People" group's collage challenge.
www.flickr.com/groups/1752359@N21/discuss/721577219187541...
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Musci Link: "Aladdin Sane" - David Bowie, from his album "Aladdin Sane". I'm suggesting this song as a loose companion to my visual piece largely because of the rather masculine tone and theme to the song but mostly for Mike Garson's unbelievably complex and completely wild, improvised piano solo. There's years of training in many musical fields behind his solo but it comes out in a furious and deliciously disorienting flurry of notes. Some of the most daring and definition-shattering piano work I've ever heard.
www.youtube.com/watch?v=bc-E78guBLIhttps://www.youtube.co...
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© 2023, Richard S Warner. All Rights Reserved. This image may not be used or copied or posted to another website in any form whatsoever without express permission of the creator of this work, with whom the sole copyright resides.
The hormones have kicked in... my sweet adorable people pleasing puppy is still adorable but increasingly, he tries it on. Ignoring me, as in this image, throwing puppy tantrums, growling, you name it, he tries it.
Iron is Tryin!!
Adolescence is here to stay!!
Tibetan Mastiff puppy Iron putting me through my paces, but I am putty in his paws....
Pumped up with testosterone, the Red Deer stag has only one thing on its mind. Forgoing food, it fights off contenders, locking with them in a clash of antlers.
In such a stage of mind its a powerful and unpredictable beast. To photograph it I had to get fairly close, but didn't hang about too long. Seeing it attention was drawn to me, I withdraw to a safer place.
When the autumn rut is over, exhausted and battle weary, they reverts back to their calmer ways, to await another season. And so it is, the next generation is secured. Such is the cycle of life and the need to propagate the species. Long may it continue.
Many thanks for your comments. Have a great week.
Black Grouse Lek the whole year around but things get a bit more serious when the testosterone wells up.
The combination of isolation, attacks on the Evans Cherry Tree community and adolescent cherry testosterone has led to an increase in incidents of bizarre and freakish behaviour.
One example of this increase in cherry rage was this past Sunday at the C.F.L. (Cherry Football League) game. A small group of adolescent cherries got into a fight which resulted in some sliced cherries, one to the pit. Thank goodness the injuries were not life threatening.
A tip through Cherry Stoppers led the authorities to the alleged instigator of the fight, which in turn led to a key witness having to identify the sour cherry.
This freak behaviour has to stop. It's time to make Sundays great again and put the cherry on top.
Take care and stay safe
Elk also know as Wapiti.
Wikipedia: The elk (Cervus canadensis), also known as the wapiti, is one of the largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America, as well as Central and East Asia. The common name elk, used in North America, creates confusion because the larger Alces alces, which is called moose in North America, is also called elk in British English, and related names in other European languages (German Elch, Swedish älg, and French élan). The name "wapiti" is sometimes used in North America for Cervus canadensis. It originates from the Shawnee and Cree word waapiti, meaning 'white rump'.
Elk have thick bodies with slender legs and short tails. They have a shoulder height of 0.75–1.5 m (2 ft 6 in – 4 ft 11 in) with a nose-to-tail length of 1.6–2.7 m (5 ft 3 in – 8 ft 10 in). Males are larger and weigh 178–497 kg (392–1,096 lb) while females weigh 171–292 kg (377–644 lb).[19]
Antlers are made of bone, which can grow at a rate of 2.5 centimeters (0.98 in) per day. While actively growing, a soft layer of highly vascularized skin known as velvet covers and protects them. This is shed in the summer when the antlers have fully developed.[25] Bull elk typically have around six tines on each antler. The Siberian and North American elk carry the largest antlers while the Altai wapiti has the smallest.[13] Roosevelt bull antlers can weigh 18 kg (40 lb).[25] The formation and retention of antlers are testosterone-driven.[26] In late winter and early spring, the testosterone level drops, which causes the antlers to shed.[27]
Actually I bet this scene has nothing to do with winter driving, but everything to do with alcohol &/or testosterone poisoning making some kid think he could drive a jeep through a marsh. :-)
A small male side-blotched lizard saw me approaching and he started doing pushups when I was 50 feet away. The pushups are meant to discourage other males from entering his territory, which he uses for courting females.
I don't know how he knew I was male.
This male, I think, is a juvenile that is developing the orange throat color that advertises the highest-testosterone, most aggressive of the three male color morphs.
DSC_3863. Rutting season at nature reserve De Hoge Veluwe in the Netherlands.
I have uploaded this image to show the beautiful and proud Red Deer Stag in its natural environment.
Copyright: Robert Kok. All rights reserved!
Please do not use my photos on websites, blogs or in any other media without my explicit permission.
Thanks for visiting, commenting and faving my photos. Its very much appreciated!