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A peacock spreading his tail, displaying his plumage Peahen. Peafowl is a common name for two bird species of the genus Pavo and one species of the closely related genus Afropavo within the tribe Pavonini of the family Phasianidae (the pheasants and their allies). Male peafowl are referred to as peacocks, and female peafowl are referred to as ...
[12] [13] A male peafowl or peacock is a larger sized bird with an average bill to tail length of 100–120 cm (40–46 in) and as much as 200–230 cm (78–90 in) to the end of a fully grown train. It weighs 4.1–5.2 kg (9–11.5 lb) and is amongst the heaviest birds in Phasianidae. The male has a metallic blue crown with short and curled ...
The bird featured in the video, and the one that most people think of when they picture a peacock, is an Indian blue peafowl (Pavo cristatus) although they are commonly called simply Indian ...
Pavo bravardi (Bravard's peafowl) (Early – Late Pliocene) – Gallus moldovicus, sometimes misspelt moldavicus, may be a junior synonym [5]; Gallus aesculapii, a Late Miocene – Early Pliocene "junglefowl" of Greece, may also have been a peafowl [5]
The male (peacock) of this species is a large bird of up to 64–70 cm (25–28 in) in length. Though much less impressive than his Asiatic cousins, the male's feathers are nevertheless deep blue with a metallic green and violet tinge.
The assumption is that these cells allow a bird to perform "remote touch", meaning that it can detect the movement of animals by pressure variations in water, without directly touching the prey. Bird species known to have bill-tip organs include ibises , shorebirds of the family Scolopacidae and kiwis .
Sexual size dimorphism varies among taxa, with males typically being larger, though this is not always the case, e.g. birds of prey, hummingbirds, and some species of flightless birds. [ 67 ] [ 68 ] Plumage dimorphism, in the form of ornamentation or coloration, also varies, though males are typically the more ornamented or brightly colored sex ...
Müller's explanation of the mechanism for this was one of the first uses of mathematics in biology. He argued that a predator, such as a young bird, must attack at least one insect, say a wasp, to learn that the black and yellow colours mean a stinging insect. If bees were differently coloured, the young bird would have to attack one of them also.