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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 ...
1781 painting by Maruyama Okyo Adult female head and upper neck Male profile. The green peafowl is a large bird in terms of overall size. The male is 1.8–3 m (5 ft 11 in – 9 ft 10 in) in total length, including its train, which measures 1.4–1.6 m (4 ft 7 in – 5 ft 3 in); the adult female is around half the total length of the breeding male at 1–1.1 m (3 ft 3 in – 3 ft 7 in) in length.
The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or fertilised eggs are spawned, and viviparity traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body.
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They hold the eggs internally for several weeks, providing nutrients, and then lay them and cover them like birds. Like marsupial " joeys ", monotreme " puggles " are larval and fetus-like, [ 9 ] as like them they cannot expand their torso due to the presence of epipubic bones, forcing them to produce undeveloped young.
Galliformes / ˌ ɡ æ l ɪ ˈ f ɔːr m iː z / is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl.Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are often reared by humans for their meat and eggs, or hunted as game birds.
All birds lay amniotic eggs with hard shells made mostly of calcium carbonate. [78] Hole and burrow nesting species tend to lay white or pale eggs, while open nesters lay camouflaged eggs. There are many exceptions to this pattern, however; the ground-nesting nightjars have pale eggs, and camouflage is instead provided by their plumage.
If the eggs happen to hatch, the parents will immediately start feeding them fish and keeping them warm. If the eggs don't hatch, the parents will slowly start leaving the eggs a little bit at a time.