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The European herring gull (Larus argentatus) is a large gull, up to 66 cm (26 in) long. Common in coastal regions of Western Europe, it was historically more abundant. It breeds across Northern Europe, Western Europe, Central Europe, Eastern Europe, Scandinavia, and the Baltic states. Some European herring gulls, especially those resident in colder areas, migrate further south in winter, but many are permanent residents, such as in Ireland, Britain, Iceland, or on the North Sea shores. They have a varied diet, including fish, crustaceans, as well as some plants, and are also scavengers, consuming carrion and food left by or stolen from humans.
Taxonomy
Their scientific name is from Latin. Larus appears to have referred to a gull or other large seabird and argentatus means decorated with silver.
The taxonomy of the herring gull/lesser black-backed gull is contentious, with different authorities recognising between two and eight species
This group has a ring distribution around the Northern Hemisphere. Most adjacent populations interbreed; however, adjacent terminal populations do not.
The Association of European Rarities Committees recognises six species:
European herring gull, L. argentatus
American herring gull, L. smithsonianus
Caspian gull, L. cachinnans
Yellow-legged gull, L. michahellis
Vega gull, L. vegae
Armenian gull, L. armenicus
Subspecies
L. a. argentatus – Pontoppidan, 1763, the nominate form, sometimes known as the Scandinavian herring gull, breeds in Scandinavia and northwestern Russia. Northern and eastern populations migrate southwest in winter. It is a large, bulky gull with extensive white in the wingtips. The outermost primary, p10 often has a large white spot (called a mirror) that extends to the wingtip. The bill is longer and forehead flatter than argenteus.
L. a. argenteus – Brehm & Schilling, 1822, sometimes known as the Western European herring gull breeds in Western Europe in Iceland, the Faroes, Britain, Ireland, France, Belgium, the Netherlands and Germany. Many birds are resident while others make short-distance migratory journeys. It is smaller than L. a. argentatus with more black and less white in the wingtips (p10 mirror is distinct from the white wingtip spot) and paler upper parts.
These taxa are classified as subspecies of Larus argentatus by some authorities such as the American Ornithologists' Union and Handbook of the Birds of the World. Others such as the Association of European Rarities Committees, British Ornithologists' Union, and the International Ornithological Union now regard them as one or two separate species.
L. (a.) smithsonianus, the American herring gull, breeds in Alaska, Canada, and the Northeast United States. Many birds migrate southwards in winter, reaching as far as Central America and the West Indies. Immature birds tend to be darker and more uniformly brown than European herring gulls and have a dark tail.
L. (a.) vegae, the Vega gull, breeds in northeastern Siberia. It winters in Japan, Korea, eastern China, and Taiwan.
Several other gulls have been included in this species in the past, but are now normally considered separate, e.g. the yellow-legged gull (L. michahellis), the Caspian gull (L. cachinnans), the Armenian gull (L. armenicus) and Heuglin's gull (L. heuglini).
Description
The male European herring gull is 60–67 cm (24–26 in) long and weighs 1,050–1,525 g (2.315–3.362 lb), while the female is 55–62 cm (22–24 in) and weighs 710–1,100 g (1.57–2.43 lb). The wingspan can range from 125 to 155 cm (49 to 61 in). Among standard measurements, the wing chord is 38 to 48 cm (15 to 19 in), the bill is 4.4 to 6.5 cm (1.7 to 2.6 in) and the tarsus is 5.3 to 7.5 cm (2.1 to 3.0 in). Adults in breeding plumage have a light grey back and upper wings and white head and underparts. The wingtips are black with white spots known as "mirrors". The bill is yellow with a red spot and a ring of bare yellow skin is seen around the pale eye. The legs are normally pink at all ages, but can be yellowish, particularly in the Baltic population, which was formerly regarded as a separate subspecies "L. a. omissus". Non-breeding adults have brown streaks on their heads and necks. Male and female plumage are identical at all stages of development, but adult males are often larger.
Juvenile and first-winter birds are mainly brown with darker streaks and have a dark bill and eyes. Second-winter birds have a whiter head and underparts with less streaking and the back is grey. Third-winter individuals are similar to adults, but retain some of the features of immature birds such as brown feathers in the wings and dark markings on the bill. The European herring gull attains adult plumage and reaches sexual maturity at an average age of four years.
At least in the south-west part of the Baltic Sea and surrounding areas, the European herring gull (L. argentatus) actually can be seen with yellow legs. They are not considered as a subspecies, since they regularly breed with grey/flesh-coloured legged herring gulls. The offspring may get yellow or normal-coloured legs. They must not be confused with the in general yellow-legged gull (L. michahellis), which are more common in the Mediterranean area, but single birds may reach more northern seas.
Similar species
Adult European herring gulls are similar to ring-billed gulls, but are much larger, have pinkish legs, and a much thicker yellow bill with more pronounced gonys. First-winter European herring gulls are much browner, but second- and third-winter birds can be confusing since soft part colours are variable and third-year herring gull often show a ring around the bill. Such birds are most easily distinguished by the larger size and larger bill of European herring gull.
The European herring gull can be differentiated from the closely related, slightly smaller lesser black-backed gull by the latter's dark grey (not actually black) back and upper wing plumage and its yellow legs and feet.
The smaller silver gull is largely confined to Australia.
Voice
Herring gulls are noisy, gregarious birds with distinctive vocalisations. Their loud, laughing call is particularly well known, and is often seen as a symbol of the seaside in countries such as the United Kingdom. The European herring gull also has a yelping alarm call and a low, barking anxiety call. The most distinct and best known call produced by European herring gulls – which is shared with their American relative – is the raucous territorial 'long call', used to signal boundaries to other birds; it is performed by the gull initially with its head bowed, then raised as the call continues.
European herring gull chicks and fledglings emit a distinctive, repetitive, high-pitched 'peep', accompanied by a head-flicking gesture when begging for food from or calling to their parents. Adult gulls in urban areas also exhibit this behaviour when fed by humans.
Behaviour
European herring gull flocks have a loose pecking order, based on size, aggressiveness, and physical strength. Adult males are usually dominant over females and juveniles in feeding and boundary disputes, while adult females are typically dominant when selecting their nesting sites.
The European herring gull has long been believed to have extremely keen vision in daylight and night vision equal or superior to that of humans; however, this species is also capable of seeing ultraviolet light. This gull also appears to have excellent hearing and a sense of taste that is particularly responsive to salt and acidity.
Parasites of European herring gulls include the fluke Microphallus piriformes.
Distribution
Ireland: Copeland Bird Observatory, Co Down.
Britain: Since 2009, herring gulls in the United Kingdom have been on the red list of birds of conservation concern, including County Durham.
Europe: Recorded from all the coasts of Europe including the Mediterranean and occasionally inland.
North America: A permanent resident in the Carolinas.
Diet
These are omnivores and opportunists like most Larus gulls, and scavenge from garbage dumps, landfill sites, and sewage outflows, with refuse comprising up to half of the bird's diet. It also steals the eggs and young of other birds (including those of other gulls), as well as seeking suitable small prey in fields, on the coast or in urban areas, or robbing plovers or lapwings of their catches. European herring gulls may also dive from the surface of the water or engage in plunge diving in the pursuit of aquatic prey, though they are typically unable to reach depths greater than 1–2 m (3.3–6.6 ft) due to their natural buoyancy. Despite their name, they have no special preference for herrings — in fact, examinations have shown that echinoderms and crustaceans comprised a greater portion of these gulls' stomach contents than fish, although fish is the principal element of regurgitations for nestlings. European herring gulls can frequently be seen to drop shelled prey from a height to break the shell. In addition, the European herring gull has been observed using pieces of bread as bait with which to catch goldfish. Vegetable matter, such as roots, tubers, seeds, grains, nuts, and fruit, is also taken to an extent. Captive European herring gulls typically show aversion to spoiled meat or heavily salted food, unless they are very hungry. The gulls may also rinse food items in water in an attempt to clean them or render them more palatable before swallowing.
European herring gulls may be observed rhythmically drumming their feet upon the ground for prolonged periods of time in a behaviour that superficially resembles Irish stepdancing, for the purpose of creating vibrations in the soil, driving earthworms to the surface, which are then consumed by the gull. These vibrations are thought to mimic those of digging moles, eliciting a surface-escape behaviour from the earthworm, beneficial in encounters with this particular predator, which the European herring gull then exploits to its own benefit in a similar manner to human worm charmers.
Whilst the European herring gull is fully capable (unlike humans) of consuming seawater without becoming ill, using specialized glands located above the eyes to remove excess salt from the body (which is then excreted in solution through the nostrils and drips from the end of the bill), it drinks fresh water in preference, if available.
The opportunistic diet of the herring gull has consequences for egg traits. A study found that larger eggs were laid in colonies where females consumed either a higher proportion of marine resources or terrestrial resources; smaller eggs were laid in colonies where females had an intermediate diet. In colonies where females consumed more marine items, they also laid eggs with higher maculation (intensity and size of spots) compared with colonies where females mainly consumed terrestrial food.
Courtship and reproduction
When forming a pair bond, the hen approaches the cock on his territory with a hunched, submissive posture, while making begging calls (similar to those emitted by young gulls). If the cock chooses not to attack her and drive her away, he responds by assuming an upright posture and making a mewing call. This is followed by a period of synchronised head-tossing movements, after which the cock then regurgitates some food for his prospective mate. If this is accepted, copulation follows. A nesting site is then chosen by both birds which is returned to in successive years. European herring gulls are almost exclusively sexually monogamous and may pair up for life, provided the couple is successful in hatching their eggs.
Two to four eggs, usually three, are laid on the ground or cliff ledges in colonies, and are defended vigorously by this large gull. The eggs are usually olive-brown in colour with dark speckles or blotches. They are incubated by both parents for 28–30 days. The chicks hatch with their eyes open, covered with fluffy down, and they are able to walk around within hours. Breeding colonies are preyed upon by great black-backed gulls, harriers, corvids and herons.
Juveniles use their beaks to peck at the red spot on the beaks of adults to indicate hunger. Parents then typically disgorge food for their offspring. The young birds are able to fly 35–40 days after hatching and fledge at five or six weeks of age. Chicks are generally fed by their parents until they are 11–12 weeks old, but the feeding may continue for more than six months of age if the young gulls continue to beg. The male feeds the chick more often than the female before fledging, with the female more often feeding after fledging.
Like most gulls, European herring gulls are long-lived, with a maximum age of 49 years recorded. Raptors (especially owls, peregrine falcons, and gyrfalcons) and seals (especially grey seals) occasionally prey on the non-nesting adults.
In the UK, the species, when taken as a whole, is declining significantly across the country, despite an increase in urban areas. The UK European herring gull population has decreased by 50% in 25 years and it is protected by law: since January 2010, Natural England has allowed lethal control only with a specific individual licence that is available only in limited circumstances. Natural England made the change following a public consultation in response to the Royal Society for the Protection of Birds in 2009 placing the species on its 'Red List' of threatened bird species, affording it the highest possible conservation status. (Previously, killing the species was allowed under a general licence obtainable by authorised persons (e.g. landowners or occupiers) under certain circumstances (e.g. to prevent serious damage to crops or livestock, to prevent disease, or to preserve public health or safety) without requiring additional permission beyond the general licence.)
The European herring gull is an increasingly common roof-nesting bird in urban areas of the UK, and many individual birds show little fear of humans. The Clean Air Act 1956 forbade the burning of refuse at landfill sites, providing the European herring gull with a regular and plentiful source of food. As a direct result, European herring gull populations in Britain skyrocketed. Faced with a lack of space at their traditional colonies, the gulls ventured inland in search of new breeding grounds. Dwindling fish stocks in the seas around Britain may also have been a significant factor in the gulls' move inland.
The gulls are found all year round in the streets and gardens of Britain, due to the presence of street lighting (which allows the gulls to forage at night), discarded food in streets, food waste contained in easy-to-tear plastic bin bags, food intentionally left out for other birds (or the gulls themselves), the relative lack of predators, and readily available, convenient, warm and undisturbed rooftop nesting space in towns and cities. Particularly large urban gull colonies (composed primarily of European herring gulls and lesser black-backed gulls) are now present in Cardiff, Bristol, Gloucester, Swindon, London, and Aberdeen.
Where not persecuted, herring gulls can become tame in the presence of humans, and may live in proximity to certain humans they learn to trust, and may occasionally enter buildings to receive or steal food.
The survival rate for urban gulls is much higher than their counterparts in coastal areas, with an annual adult mortality rate less than 5%. Also, each European herring gull pair commonly rears three chicks per year. This, when combined with their long-lived nature, has resulted in a massive increase in numbers over a relatively short period of time and has brought urban-dwelling members of the species into conflict with humans.
Once familiar with humans, urban European herring gulls show little hesitation in swooping down to steal food from the hands of humans, although a study conducted in 2019 demonstrated that some gulls are more averse to snatching food in proximity to humans if the experimenter made eye contact with the bird. During the breeding season, the gulls also aggressively 'dive bomb' and attempt to strike with claws and wings (sometimes spraying faeces or vomit at the same time) at humans that they perceive to be a threat to their eggs and chicks—often innocent passers-by or residents of the buildings on which they have constructed their nests. Large amounts of gull excrement deposited on property and the noise from courting pairs and begging chicks in the summer is also considered to be a nuisance by humans living alongside the European herring gull.
Nonlethal attempts to deter the gulls from nesting in urban areas have been largely unsuccessful. The European herring gull is intelligent and will completely ignore most bird-scaring technology after determining that it poses no threat. Rooftop spikes, tensioned wires, netting, and similar are also generally ineffective against this species, as it has large, wide feet with thick, leathery skin, which affords the seagull excellent weight distribution and protection from sharp objects (the bird may simply balance itself on top of these obstacles with little apparent concern). If nests are removed and eggs are taken, broken, or oiled, the gulls simply rebuild and/or relay, or choose another nest site in the same area and start again.
Man-made models of birds of prey placed on top of buildings are generally ignored by the gulls once they realise they are not real, and attempts to scare the gulls away using raptors are similarly ineffective. Although they are intimidated by birds of prey, European herring gulls, in addition to being social birds with strength in numbers, are large, powerful, and aggressive as individuals and are more than capable of fighting back against the potential predator, particularly if they consider their chicks to be at risk; in fact, the gulls may actually pose a greater threat to a raptor than vice versa. European herring gulls are also naturally accustomed to predators (such as skuas and great black-backed gulls) living in the vicinity of their nest sites in the wild and are not particularly discouraged from breeding by their presence.
After studying the 'golden proportion' I was amazed at how can be found all around us. I categorised things that hold golden proportions into 'nature', 'the human body', 'paintings', 'buildings' and 'modern designs'. Each postcard represents a category and they are displayed in chronological order. The postcards themselves have been designed exactly to the golden proportions - the numbers are at the very centre of the spiral. When read down these numbers read '1.618', which is the golden ratio itself.
Alternative conception to replace The Point in central Milton Keynes. Created to oppose plans of heavily-proportioned retail building, promoted by developers.
'Tree House' concept was created by leading artist, Robert Rusin, known as enthusiastic promoter of Milton Keynes around the world.
Design sees navy-blue glass cube/rectangle adorned by free-form, white frame, resembling a tree, i.e. famous Oak tree, believed to be one of the ultimate symbols of the town.
Milton Keynes, located 40 miles north of London, UK is a brilliant example of purpose built 'garden city'.
See also www.mkfive.co.uk
Proportion and symmetry!...but still due to be flattened and carted away in 5 million skips.
I imagine it is actually true that maintenance and services in this 60s leviathon would cost more than the PFI mortgage on the imminent new-build. On the other hand the artist's impression of the new-build looks like a lot of other contemporary Liverpool architecture: spatially fussy, ashamed of its size, texturally chequerboard and soon to look like 1970s Karl-Marx-Stadt in rain.
And by the way that lone green light on the right is just to the right of my window in 2011 (& 2012). Wish I could join in the love-fest for the NHS (and I support it wholeheartedly) but it does need to be managed by Hattie Jacques types not Polly Toynbee types. But certainly not by Gove or Hunt types.
The Indian peafowl (Pavo cristatus), also known as the common peafowl, and blue peafowl, is a peafowl species native to the Indian subcontinent. It has been introduced to many other countries. Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens, although both sexes are often referred to colloquially as a "peacock".
Indian peafowl display a marked form of sexual dimorphism. The peacock is brightly coloured, with a predominantly blue fan-like crest of spatula-tipped wire-like feathers and is best known for the long train made up of elongated upper-tail covert feathers which bear colourful eyespots. These stiff feathers are raised into a fan and quivered in a display during courtship. Despite the length and size of these covert feathers, peacocks are still capable of flight. Peahens lack the train, have a white face and iridescent green lower neck, and dull brown plumage. The Indian peafowl lives mainly on the ground in open forest or on land under cultivation where they forage for berries, grains but also prey on snakes, lizards, and small rodents. Their loud calls make them easy to detect, and in forest areas often indicate the presence of a predator such as a tiger. They forage on the ground in small groups and usually try to escape on foot through undergrowth and avoid flying, though they fly into tall trees to roost.
The function of the peacock's elaborate train has been debated for over a century. In the 19th century, Charles Darwin found it a puzzle, hard to explain through ordinary natural selection. His later explanation, sexual selection, is widely but not universally accepted. In the 20th century, Amotz Zahavi argued that the train was a handicap, and that males were honestly signalling their fitness in proportion to the splendour of their trains. Despite extensive study, opinions remain divided on the mechanisms involved.
The bird is celebrated in Hindu and Greek mythology, and is the national bird of India. The Indian peafowl is listed as of Least Concern on the IUCN Red List.
Taxonomy and naming
Carl Linnaeus in his work Systema Naturae in 1758 assigned to the Indian peafowl the technical name of Pavo cristatus (means "crested peafowl" in classical Latin).
The earliest usage of the word in written English is from around 1300 and spelling variants include pecok, pekok, pecokk, peacocke, peacock, pyckock, poucock, pocok, pokok, pokokke, and poocok among others. The current spelling was established in the late 17th century. Chaucer (1343–1400) used the word to refer to a proud and ostentatious person in his simile "proud a pekok" in Troilus and Criseyde (Book I, line 210).
The Sanskrit, later Pali, and modern Hindi term for the animal is maur. It is debated that the nomenclature of the Maurya Empire, whose first emperor Chandragupta Maurya was raised and influenced by peacock farmers was named after the terminology.
The Greek word for peacock was taos and was related to the Persian "tavus" (as in Takht-i-Tâvus for the famed Peacock Throne). The Ancient Hebrew word tuki (plural tukkiyim) has been said to have been derived from the Tamil tokei but sometimes traced to the Egyptian tekh. In modern Hebrew the word for peacock is "tavas". In Sanskrit, the peacock is known as Mayura and is associated with the killing of snakes.
Description
Male neck detail
Peacocks are a larger sized bird with a length from bill to tail of 100 to 115 cm (39 to 45 in) and to the end of a fully grown train as much as 195 to 225 cm (77 to 89 in) and weigh 4–6 kg (8.8–13.2 lb). The females, or peahens, are smaller at around 95 cm (37 in) in length and weigh 2.75–4 kg (6.1–8.8 lb). Indian peafowl are among the largest and heaviest representatives of the Phasianidae. So far as is known, only the wild turkey grows notably heavier. The green peafowl is slightly lighter in body mass despite the male having a longer train on average than the male of the Indian species. Their size, colour and shape of crest make them unmistakable within their native distribution range. The male is metallic blue on the crown, the feathers of the head being short and curled. The fan-shaped crest on the head is made of feathers with bare black shafts and tipped with bluish-green webbing. A white stripe above the eye and a crescent shaped white patch below the eye are formed by bare white skin. The sides of the head have iridescent greenish blue feathers. The back has scaly bronze-green feathers with black and copper markings. The scapular and the wings are buff and barred in black, the primaries are chestnut and the secondaries are black. The tail is dark brown and the "train" is made up of elongated upper tail coverts (more than 200 feathers, the actual tail has only 20 feathers) and nearly all of these feathers end with an elaborate eye-spot. A few of the outer feathers lack the spot and end in a crescent shaped black tip. The underside is dark glossy green shading into blackish under the tail. The thighs are buff coloured. The male has a spur on the leg above the hind toe.
The adult peahen has a rufous-brown head with a crest as in the male but the tips are chestnut edged with green. The upper body is brownish with pale mottling. The primaries, secondaries and tail are dark brown. The lower neck is metallic green and the breast feathers are dark brown glossed with green. The remaining underparts are whitish. Downy young are pale buff with a dark brown mark on the nape that connects with the eyes. Young males look like the females but the wings are chestnut coloured.
The most common calls are a loud pia-ow or may-awe. The frequency of calling increases before the Monsoon season and may be delivered in alarm or when disturbed by loud noises. In forests, their calls often indicate the presence of a predators such as the tiger. They also make many other calls such as a rapid series of ka-aan..ka-aan or a rapid kok-kok. They often emit an explosive low-pitched honk! when agitated.
Mutations and hybrids
This leucistic mutation is commonly mistaken for an albino.
There are several colour mutations of Indian peafowl. These very rarely occur in the wild, but selective breeding has made them common in captivity. The black-shouldered or Japanned mutation was initially considered as a subspecies of the Indian peafowl (P. c. nigripennis) (or even a separate species (P. nigripennis)) and was a topic of some interest during Darwin's time. Others had doubts about its taxonomic status, but the English naturalist and biologist Charles Darwin (1809–1882) presented firm evidence for it being a variety under domestication, which treatment is now well established and accepted. It being a colour variation rather than a wild species was important for Darwin to prove, as otherwise it could undermine his theory of slow modification by natural selection in the wild. It is, however, only a case of genetic variation within the population. In this mutation, the adult male is melanistic with black wings. Young birds with the nigripennis mutation are creamy white with fulvous-tipped wings. The gene produces melanism in the male and in the peahen it produces a dilution of colour with creamy white and brown markings. Other forms include the pied and white mutations, all of which are the result of allelic variation at specific loci.
Crosses between a male green peafowl (Pavo muticus) and a female Indian peafowl (P. cristatus) produce a stable hybrid called a "Spalding", named after Mrs. Keith Spalding, a bird fancier in California. There can be problems if birds of unknown pedigree are released into the wild, as the viability of such hybrids and their offspring is often reduced (see Haldane's rule and outbreeding depression).
Distribution and habitat
The Indian peafowl is a resident breeder across the Indian subcontinent and inhabits the drier lowland areas of Sri Lanka. In the Indian subcontinent, it is found mainly below an elevation of 1,800 m (5,900 ft) and in rare cases seen at about 2,000 m (6,600 ft). It is found in moist and dry-deciduous forests, but can adapt to live in cultivated regions and around human habitations and is usually found where water is available. In many parts of northern India, they are protected by religious practices and will forage around villages and towns for scraps. Some have suggested that the peacock was introduced into Europe by Alexander the Great, while others say the bird had reached Athens by 450 BCE and may have been introduced even earlier. It has since been introduced in many other parts of the world and has become feral in some areas.
The Indian peafowl has been introduced to the United States, the United Kingdom, United Arab Emirates, France, Mexico, Honduras, Costa Rica, Colombia, Guyana, Suriname, Brazil, Uruguay, Argentina, South Africa, Spain, Portugal, Greece, Italy, Madagascar, Mauritius, Réunion, Indonesia, Papua New Guinea, Australia, New Zealand, Croatia and the island of Lokrum.
Genome sequencing
The first whole-genome sequencing of Indian peafowl identified a total of 15,970 protein-coding sequences, along with 213 tRNAs, 236 snoRNAs, and 540 miRNAs. The peacock genome was found to have less repetitive DNA (8.62%) than that of the chicken genome (9.45%). PSMC analysis suggested that the peacock suffered at least two bottlenecks (around four million years ago and again 450,000 years ago), which resulted in a severe reduction in its effective population size.
Behaviour and ecology
Peafowl are best known for the male's extravagant display feathers which, despite actually growing from their back, are thought of as a tail. The "train" is in reality made up of the enormously elongated upper tail coverts. The tail itself is brown and short as in the peahen. The colours result not from any green or blue pigments but from the micro-structure of the feathers and the resulting optical phenomena. The long train feathers (and tarsal spurs) of the male develop only after the second year of life. Fully developed trains are found in birds older than four years. In northern India, these begin to develop each February and are moulted at the end of August. The moult of the flight feathers may be spread out across the year.
Peafowl forage on the ground in small groups, known as musters, that usually have a cock and 3 to 5 hens. After the breeding season, the flocks tend to be made up only of females and young. They are found in the open early in the mornings and tend to stay in cover during the heat of the day. They are fond of dust-bathing and at dusk, groups walk in single file to a favourite waterhole to drink. When disturbed, they usually escape by running and rarely take to flight.
Peafowl produce loud calls especially in the breeding season. They may call at night when alarmed and neighbouring birds may call in a relay like series. Nearly seven different call variants have been identified in the peacocks apart from six alarm calls that are commonly produced by both sexes.
Peafowl roost in groups during the night on tall trees but may sometimes make use of rocks, buildings or pylons. In the Gir forest, they chose tall trees in steep river banks. Birds arrive at dusk and call frequently before taking their position on the roost trees. Due to this habit of congregating at the roost, many population studies are made at these sites. The population structure is not well understood. In a study in northern India (Jodhpur), the number of males was 170–210 for 100 females but a study involving evening counts at the roost site in southern India (Injar) suggested a ratio of 47 males for 100 females.
Sexual selection
The colours of the peacock and the contrast with the much duller peahen were a puzzle to early thinkers. Charles Darwin wrote to Asa Gray that the "sight of a feather in a peacock's tail, whenever I gaze at it, makes me sick!" as he failed to see an adaptive advantage for the extravagant tail which seemed only to be an encumbrance. Darwin developed a second principle of sexual selection to resolve the problem, though in the prevailing intellectual trends of Victorian Britain, the theory failed to gain widespread attention.
The American artist Abbott Handerson Thayer tried to show, from his own imagination, the value of the eyespots as disruptive camouflage in a 1907 painting. He used the painting in his 1909 book Concealing-Coloration in the Animal Kingdom, denying the possibility of sexual selection and arguing that essentially all forms of animal colouration had evolved as camouflage. He was roundly criticised in a lengthy paper by Theodore Roosevelt, who wrote that Thayer had only managed to paint the peacock's plumage as camouflage by sleight of hand, "with the blue sky showing through the leaves in just sufficient quantity here and there to warrant the author-artists explaining that the wonderful blue hues of the peacock's neck are obliterative because they make it fade into the sky."
In the 1970s a possible resolution to the apparent contradiction between natural selection and sexual selection was proposed. Amotz Zahavi argued that peacocks honestly signalled the handicap of having a large and costly train. However, the mechanism may be less straightforward than it seems – the cost could arise from depression of the immune system by the hormones that enhance feather development.
Male courting female
The ornate train is believed to be the result of sexual selection by the females. Males use their ornate trains in a courtship display: they raise the feathers into a fan and quiver them. However, recent studies have failed to find a relation between the number of displayed eyespots and mating success. Marion Petrie tested whether or not these displays signaled a male's genetic quality by studying a feral population of peafowl in Whipsnade Wildlife Park in southern England. She showed that the number of eyespots in the train predicted a male's mating success, and this success could be manipulated by cutting the eyespots off some of the male's ornate feathers.
Although the removal of eyespots makes males less successful in mating, eyespot removal substantially changes the appearance of male peafowls. It is likely that females mistake these males for sub-adults, or perceive that the males are physically damaged. Moreover, in a feral peafowl population, there is little variation in the number of eyespots in adult males. It is rare for adult males to lose a significant number of eyespots. Therefore, females' selection might depend on other sexual traits of males' trains. The quality of train is an honest signal of the condition of males; peahens do select males on the basis of their plumage. A recent study on a natural population of Indian peafowls in the Shivalik area of India has proposed a "high maintenance handicap" theory. It states that only the fittest males can afford the time and energy to maintain a long tail. Therefore, the long train is an indicator of good body condition, which results in greater mating success. While train length seems to correlate positively with MHC diversity in males, females do not appear to use train length to choose males. A study in Japan also suggests that peahens do not choose peacocks based on their ornamental plumage, including train length, number of eyespots and train symmetry. Another study in France brings up two possible explanations for the conflicting results that exist. The first explanation is that there might be a genetic variation of the trait of interest under different geographical areas due to a founder effect and/or a genetic drift. The second explanation suggests that "the cost of trait expression may vary with environmental conditions," so that a trait that is indicative of a particular quality may not work in another environment.
Fisher's runaway model proposes positive feedback between female preference for elaborate trains and the elaborate train itself. This model assumes that the male train is a relatively recent evolutionary adaptation. However, a molecular phylogeny study on peacock-pheasants shows the opposite; the most recently evolved species is actually the least ornamented one. This finding suggests a chase-away sexual selection, in which "females evolve resistance to male ploys". A study in Japan goes on to conclude that the "peacocks' train is an obsolete signal for which female preference has already been lost or weakened".
However, some disagreement has arisen in recent years concerning whether or not female peafowl do indeed select males with more ornamented trains. In contrast to Petrie's findings, a seven-year Japanese study of free-ranging peafowl came to the conclusion that female peafowl do not select mates solely on the basis of their trains. Mariko Takahashi found no evidence that peahens expressed any preference for peacocks with more elaborate trains (such as trains having more ocelli), a more symmetrical arrangement, or a greater length. Takahashi determined that the peacock's train was not the universal target of female mate choice, showed little variance across male populations, and, based on physiological data collected from this group of peafowl, do not correlate to male physical conditions. Adeline Loyau and her colleagues responded to Takahashi's study by voicing concern that alternative explanations for these results had been overlooked, and that these might be essential for the understanding of the complexity of mate choice. They concluded that female choice might indeed vary in different ecological conditions.
A 2013 study that tracked the eye movements of peahens responding to male displays found that they looked in the direction of the upper train of feathers only when at long distances and that they looked only at the lower feathers when males displayed close to them. The rattling of the tail and the shaking of the wings helped in keeping the attention of females.
Breeding
Peacocks are polygamous, and the breeding season is spread out but appears to be dependent on the rains. Peafowls usually reach sexual maturity at the age of 2 to 3 years old. Several males may congregate at a lek site and these males are often closely related. Males at leks appear to maintain small territories next to each other and they allow females to visit them and make no attempt to guard harems. Females do not appear to favour specific males. The males display in courtship by raising the upper-tail coverts into an arched fan. The wings are held half open and drooped and it periodically vibrates the long feathers, producing a ruffling sound. The cock faces the hen initially and struts and prances around and sometimes turns around to display the tail. Males may also freeze over food to invite a female in a form of courtship feeding. Males may display even in the absence of females. When a male is displaying, females do not appear to show any interest and usually continue their foraging.
The peak season in southern India is April to May, January to March in Sri Lanka and June in northern India. The nest is a shallow scrape in the ground lined with leaves, sticks and other debris. Nests are sometimes placed on buildings and, in earlier times, have been recorded using the disused nest platforms of the white-rumped vultures. The clutch consists of 4–8 fawn to buff white eggs which are incubated only by the female. The eggs take about 28 days to hatch. The chicks are nidifugous and follow the mother around after hatching. Downy young may sometimes climb on their mothers' back and the female may carry them in flight to a safe tree branch. An unusual instance of a male incubating a clutch of eggs has been reported.
Feeding
Peafowl are omnivorous and eat seeds, insects (including termites), worms, fruits, small mammals, frogs, and reptiles (such as lizards). They feed on small snakes but keep their distance from larger ones. In the Gir forest of Gujarat, a large percentage of their food is made up of the fallen berries of Zizyphus. They also feed on tree and flower buds, petals, grain, and grass and bamboo shoots. Around cultivated areas, peafowl feed on a wide range of crops such as groundnut, tomato, paddy, chili and even bananas. Around human habitations, they feed on a variety of food scraps and even human excreta. In the countryside, it is particularly partial to crops and garden plants.
Mortality factors
Large animals such as leopards, dholes, golden jackals, and tigers can ambush adult peafowls. However, only leopards regularly prey upon peafowls as adult peafowls are difficult to catch since they can usually escape ground predators by flying into trees. They are also sometimes hunted by large birds of prey such as the changeable hawk-eagle and rock eagle-owl. Chicks are somewhat more prone to predation than adult birds. Adults living near human habitations are sometimes hunted by domestic dogs or by humans in some areas (southern Tamil Nadu) for folk remedies involving the use of "peacock oil".
Foraging in groups provides some safety as there are more eyes to look out for predators. They also roost on high tree tops to avoid terrestrial predators, especially leopards.
In captivity, birds have been known to live for 23 years but it is estimated that they live for only about 15 years in the wild.
Conservation and status
Indian peafowl are widely distributed in the wild across South Asia and protected both culturally in many areas and by law in India. Conservative estimates of the population put them at more than 100,000. Illegal poaching for meat, however, continues and declines have been noted in parts of India. Peafowl breed readily in captivity and as free-ranging ornamental fowl. Zoos, parks, bird-fanciers and dealers across the world maintain breeding populations that do not need to be augmented by the capture of wild birds.
Poaching of peacocks for their meat and feathers and accidental poisoning by feeding on pesticide treated seeds are known threats to wild birds. Methods to identify if feathers have been plucked or have been shed naturally have been developed, as Indian law allows only the collection of feathers that have been shed.
In parts of India, the birds can be a nuisance to agriculture as they damage crops. Its adverse effects on crops, however, seem to be offset by the beneficial role it plays by consuming prodigious quantities of pests such as grasshoppers. They can also be a problem in gardens and homes where they damage plants, attack their reflections (thereby breaking glass and mirrors), perch and scratch cars or leave their droppings. Many cities where they have been introduced and gone feral have peafowl management programmes. These include educating citizens on how to prevent the birds from causing damage while treating the birds humanely.
In culture
Prominent in many cultures, the peacock has been used in numerous iconic representations, including being designated the national bird of India in 1963. The peacock, known as mayura in Sanskrit, has enjoyed a fabled place in India since and is frequently depicted in temple art, mythology, poetry, folk music and traditions. A Sanskrit derivation of mayura is from the root mi for kill and said to mean "killer of snakes". It is also likely that the Sanskrit term is a borrowing from Proto-Dravidian *mayVr (whence the Tamil word for peacock மயில் (mayil)) or a regional Wanderwort. Many Hindu deities are associated with the bird, Krishna is often depicted with a feather in his headband, while worshippers of Shiva associate the bird as the steed of the God of war, Kartikeya (also known as Skanda or Murugan). A story in the Uttara Ramayana describes the head of the Devas, Indra, who unable to defeat Ravana, sheltered under the wing of peacock and later blessed it with a "thousand eyes" and fearlessness from serpents. Another story has Indra who after being cursed with a thousand ulcers was transformed into a peacock with a thousand eyes and this curse was removed by Vishnu.
In Buddhist philosophy, the peacock represents wisdom. Peacock feathers are used in many rituals and ornamentation. Peacock motifs are widespread in Indian temple architecture, old coinage, textiles and continue to be used in many modern items of art and utility. A folk belief found in many parts of India is that the peacock does not copulate with the peahen but that she is impregnated by other means. The stories vary and include the idea that the peacock looks at its ugly feet and cries whereupon the tears are fed on by the peahen causing it to be orally impregnated while other variants incorporate sperm transfer from beak to beak. Similar ideas have also been ascribed to Indian crow species. In Greek mythology the origin of the peacock's plumage is explained in the tale of Hera and Argus. The main figure of the Yazidi religion Yezidism, Melek Taus, is most commonly depicted as a peacock. Peacock motifs are widely used even today such as in the logos of the US NBC and the PTV television networks and the Sri Lankan Airlines.
These birds were often kept in menageries and as ornaments in large gardens and estates. In medieval times, knights in Europe took a "Vow of the Peacock" and decorated their helmets with its plumes. In several Robin Hood stories, the titular archer uses arrows fletched with peacock feathers. Feathers were buried with Viking warriors and the flesh of the bird was said to cure snake venom and many other maladies. Numerous uses in Ayurveda have been documented. Peafowl were said to keep an area free of snakes. In 1526, the legal issue as to whether peacocks were wild or domestic fowl was thought sufficiently important for Cardinal Wolsey to summon all the English judges to give their opinion, which was that they are domestic fowl.
In Anglo-Indian usage of the 1850s, to peacock meant making visits to ladies and gentlemen in the morning. In the 1890s, the term "peacocking" in Australia referred to the practice of buying up the best pieces of land ("picking the eyes") so as to render the surrounding lands valueless. The English word "peacock" has come to be used to describe a man who is very proud or gives a lot of attention to his clothing.
Main article: Di Goldene Pave
A golden peacock (in Yiddish, Di Goldene Pave) is considered by some as a symbol of Ashkenazi Jewish culture, and is the subject of several folktales and songs in Yiddish. Peacocks are frequently used in European heraldry. Heraldic peacocks are most often depicted as facing the viewer and with their tails displayed. In this pose, the peacock is referred to as being "in his pride". Peacock tails, in isolation from the rest of the bird, are rare in British heraldry, but see frequent use in German systems.
The American television network NBC uses a stylized peacock as a legacy of its early introduction of color television, alluding to the brilliant color of a peacock, and continues to promote the bird as a trademark of its broadcasting and streaming services.
A large proportion of marine litter is plastics (UNEP 2009). The impact of large plastic material on the environment has been widely studied. Effects include entanglement of marine animals in plastic and ingestion of plastic by marine organisms.
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This photo has been graciously provided to be used in the GRID-Arendal resources library by: GRID-Arendal
Proportion because the person seems very small and out of focus compared to my hand. The most visually striking part of this photo is the bright different colours like blue, green and pink that pop out.
Long-tailed Duck
Clangula hyemalis
Lacha earrfhada
Status: Winter visitor - it is likely that a substantial proportion of the birds that occur in Ireland and Britain come from the population breeding in Greenland/Iceland.
Conservation Concern: Green-listed in Ireland. The European population has been assessed as Secure.
Identification: Small brown, black and white duck, with rounded head and short stubby bill. Central tail feathers of male elongated. Complex plumages, but in winter, males with white upper mantle, scapulars, head and neck. Sides of lower part of the head with a dark patch (autumn) and pale grey-brown with chestnut lower rim at the base of the black patch (winter). Bill mostly dull grey (winter) or black with pink patch (late winter). Females with no elongated tail feathers, colours duller, narrower patches on side of head, which are less distinct in winter.
Similar Species: Goldeneye, Common Scoter
Call: Male with far-carrying nasal yodel 'ow ow-owdelee, ow-owdelee'.
Diet: During the breeding season, they feed on a variety of animal and occasionally plant life. Their winter diet differs considerably, and consists, predominantly of molluscs and crustaceans, including cockles, shrimps and crabs, and also small fish and very occasionally grain from distillery outfalls.
Breeding: Long-tailed Ducks nest on open tundra pools, hill lakes and rivers, all with little cover. They also breed near the sea, and occasionally in rocky fjord country.
Wintering: Seem to prefer offshore waters adjacent to rocky coastline.
Where to See: Lough Foyle in County Derry, Gweebarra Bay in County Donegal, Inishfree Bay in County Donegal, Belfast Lough in County Antrim and Drumcliff Bay Estuary in County Sligo are among the best wintering sites (up to 90 birds).
One of the keys to shooting Epic Landscape Photography is exalting the photograph's soul via golden ratio compositions, thusly wedding the photographic art to the divine proportion by which life itself was designed and exalted. The simple golden ratio PHI can exalt your art with the golden ratio harmonies in the form of golden rectangles, golden triangles, golden spirals, golden cuts, and more, all linked by the divine proportion!
Dr. Elliot McGucken's Golden Number Ratio Fine Art Landscape & Nature Photography Composition Studies!
instagram.com/goldennumberratio
www.facebook.com/goldennumberratio/
Greetings flickr friends! I am working on several books on "epic photography," and I recently finished a related one titled: The Golden Number Ratio Principle: Why the Fibonacci Numbers Exalt Beauty and How to Create PHI Compositions in Art, Design, & Photography: An Artistic and Scientific Introduction to the Golden Mean . Message me on facebook for a free review copy!
www.facebook.com/goldennumberratio/
The Golden Ratio also informs the design of the golden revolver on all the swimsuits and lingerie, as well as the 45surf logo!
The Golden Number Ratio Principle: Dr. E’s Golden Ratio Principle: The golden ratio exalts beauty because the number is a characteristic of the mathematically and physically most efficient manners of growth and distribution, on both evolutionary and purely physical levels. The golden ratio ensures that the proportions and structure of that which came before provide the proportions and structure of that which comes after. Robust, ordered growth is naturally associated with health and beauty, and thus we evolved to perceive the golden ratio harmonies as inherently beautiful, as we saw and felt their presence in all vital growth and life—in the salient features and proportions of humans and nature alike, from the distribution of our facial features and bones to the arrangements of petals, leaves, and sunflowers seeds. As ratios between Fibonacci Numbers offer the closest whole-number approximations to the golden ratio, and as seeds, cells, leaves, bones, and other physical entities appear in whole numbers, the Fibonacci Numbers oft appear in nature’s elements as “growth’s numbers.” From the dawn of time, humanity sought to salute their gods in art and temples exalting the same proportion by which all their vital sustenance and they themselves had been created—the golden ratio.
Ansel Adams is not only my favorite photographer, but he is one of the greatest photographers and artists of all time. And just like great artists including Michelangelo, Monet, Degas, Renoir, Leonardo da Vinci, Vermeer, Rembrandt, Botticelli, and Picasso, Ansel used the golden ratio and divine proportions in his epic art.
Not so long ago I discovered golden regions in many of his famous public domain his 8x10 aspect ratio photographs. I call these golden harmony regions "regions of golden action" or "ROGA"S, as seen here:
www.facebook.com/media/set/?set=a.1812448512351066.107374...
And too, I created some videos highlighting Ansel's use of the golden harmonies. Enjoy!
www.youtube.com/watch?v=AGnxOAhK3os
www.youtube.com/watch?v=WFlzAaBgsDI
www.youtube.com/watch?v=D3eJ86Ej1TY
More golden ratio and epic photography composition books soon! Best wishes for the Holiday Season! Dr. Elliot McGucken :)
Mechanical Puppet developed by Tatyana Mustakos during her post-baccalaureate artist residency, Summer 2020.
Shoes are made out of leather, heat molded and wet molded to fit the feet precisely.
Legs have a pulley system that runs from knee to thigh through hips into torso and out the back, when pulled they create a slight kicking motion.
Arms have a pulley system that runs from hand to forearm to upper arm to shoulder blades, When pulled raises the hands, when not pulled, gravity causes them to lower
Mouth: a pulley through the head allows the mouth to open when pulled; when not actively pulled the elasticity of the silicone face pulls it closed.
Eyes: rotation system closes eyes when pulled up - this mimics the design of antique bisque dolls with a weight on the eyes that closes them when doll is horizontal and opens when vertical.
Clothes: Shirt has hole in the back to allow for easier access to pulleys.
Internal channels stop everything from tangling as aside from pulleys the body is strung together with elastic, but an open back allows for everything to be managed and checked/observed/altered.
One of the keys to shooting Epic Landscape Photography is exalting the photograph's soul via golden ratio compositions, thusly wedding the photographic art to the divine proportion by which life itself was designed and exalted. The simple golden ratio PHI can exalt your art with the golden ratio harmonies in the form of golden rectangles, golden triangles, golden spirals, golden cuts, and more, all linked by the divine proportion!
Dr. Elliot McGucken's Golden Number Ratio Fine Art Landscape & Nature Photography Composition Studies!
instagram.com/goldennumberratio
www.facebook.com/goldennumberratio/
Greetings flickr friends! I am working on several books on "epic photography," and I recently finished a related one titled: The Golden Number Ratio Principle: Why the Fibonacci Numbers Exalt Beauty and How to Create PHI Compositions in Art, Design, & Photography: An Artistic and Scientific Introduction to the Golden Mean . Message me on facebook for a free review copy!
www.facebook.com/goldennumberratio/
The Golden Ratio also informs the design of the golden revolver on all the swimsuits and lingerie, as well as the 45surf logo!
The Golden Number Ratio Principle: Dr. E’s Golden Ratio Principle: The golden ratio exalts beauty because the number is a characteristic of the mathematically and physically most efficient manners of growth and distribution, on both evolutionary and purely physical levels. The golden ratio ensures that the proportions and structure of that which came before provide the proportions and structure of that which comes after. Robust, ordered growth is naturally associated with health and beauty, and thus we evolved to perceive the golden ratio harmonies as inherently beautiful, as we saw and felt their presence in all vital growth and life—in the salient features and proportions of humans and nature alike, from the distribution of our facial features and bones to the arrangements of petals, leaves, and sunflowers seeds. As ratios between Fibonacci Numbers offer the closest whole-number approximations to the golden ratio, and as seeds, cells, leaves, bones, and other physical entities appear in whole numbers, the Fibonacci Numbers oft appear in nature’s elements as “growth’s numbers.” From the dawn of time, humanity sought to salute their gods in art and temples exalting the same proportion by which all their vital sustenance and they themselves had been created—the golden ratio.
Ansel Adams is not only my favorite photographer, but he is one of the greatest photographers and artists of all time. And just like great artists including Michelangelo, Monet, Degas, Renoir, Leonardo da Vinci, Vermeer, Rembrandt, Botticelli, and Picasso, Ansel used the golden ratio and divine proportions in his epic art.
Not so long ago I discovered golden regions in many of his famous public domain his 8x10 aspect ratio photographs. I call these golden harmony regions "regions of golden action" or "ROGA"S, as seen here:
www.facebook.com/media/set/?set=a.1812448512351066.107374...
And too, I created some videos highlighting Ansel's use of the golden harmonies. Enjoy!
www.youtube.com/watch?v=AGnxOAhK3os
www.youtube.com/watch?v=WFlzAaBgsDI
www.youtube.com/watch?v=D3eJ86Ej1TY
More golden ratio and epic photography composition books soon! Best wishes for the Holiday Season! Dr. Elliot McGucken :)
One of the keys to shooting Epic Landscape Photography is exalting the photograph's soul via golden ratio compositions, thusly wedding the photographic art to the divine proportion by which life itself was designed and exalted. The simple golden ratio PHI can exalt your art with the golden ratio harmonies in the form of golden rectangles, golden triangles, golden spirals, golden cuts, and more, all linked by the divine proportion!
Dr. Elliot McGucken's Golden Number Ratio Fine Art Landscape & Nature Photography Composition Studies!
instagram.com/goldennumberratio
www.facebook.com/goldennumberratio/
Greetings flickr friends! I am working on several books on "epic photography," and I recently finished a related one titled: The Golden Number Ratio Principle: Why the Fibonacci Numbers Exalt Beauty and How to Create PHI Compositions in Art, Design, & Photography: An Artistic and Scientific Introduction to the Golden Mean . Message me on facebook for a free review copy!
www.facebook.com/goldennumberratio/
The Golden Ratio also informs the design of the golden revolver on all the swimsuits and lingerie, as well as the 45surf logo!
The Golden Number Ratio Principle: Dr. E’s Golden Ratio Principle: The golden ratio exalts beauty because the number is a characteristic of the mathematically and physically most efficient manners of growth and distribution, on both evolutionary and purely physical levels. The golden ratio ensures that the proportions and structure of that which came before provide the proportions and structure of that which comes after. Robust, ordered growth is naturally associated with health and beauty, and thus we evolved to perceive the golden ratio harmonies as inherently beautiful, as we saw and felt their presence in all vital growth and life—in the salient features and proportions of humans and nature alike, from the distribution of our facial features and bones to the arrangements of petals, leaves, and sunflowers seeds. As ratios between Fibonacci Numbers offer the closest whole-number approximations to the golden ratio, and as seeds, cells, leaves, bones, and other physical entities appear in whole numbers, the Fibonacci Numbers oft appear in nature’s elements as “growth’s numbers.” From the dawn of time, humanity sought to salute their gods in art and temples exalting the same proportion by which all their vital sustenance and they themselves had been created—the golden ratio.
Ansel Adams is not only my favorite photographer, but he is one of the greatest photographers and artists of all time. And just like great artists including Michelangelo, Monet, Degas, Renoir, Leonardo da Vinci, Vermeer, Rembrandt, Botticelli, and Picasso, Ansel used the golden ratio and divine proportions in his epic art.
Not so long ago I discovered golden regions in many of his famous public domain his 8x10 aspect ratio photographs. I call these golden harmony regions "regions of golden action" or "ROGA"S, as seen here:
www.facebook.com/media/set/?set=a.1812448512351066.107374...
And too, I created some videos highlighting Ansel's use of the golden harmonies. Enjoy!
www.youtube.com/watch?v=AGnxOAhK3os
www.youtube.com/watch?v=WFlzAaBgsDI
www.youtube.com/watch?v=D3eJ86Ej1TY
More golden ratio and epic photography composition books soon! Best wishes for the Holiday Season! Dr. Elliot McGucken :)
Many elements stand out to me. An obvious one is texture. There are the texture of the leaves, wood, trees, and pine needles. There is repetition and line, since the wood pillars could be looked at as thick lines. Those lines also create direction, which almost go perpendicular to the lines that the trees create. There is a good harmony in the photo between all of the colors, and the similar textures. The figure sitting creates emphasis, due to the different colors he is wearing and dark values.