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Tame, slight physical changes Common in captivity, somewhat common in the wild, feral populations rare 1c Carnivora: Domestic Muscovy duck (Cairina moschata domestica) Wild Muscovy duck (Cairina moschata sylvestris) 700–600 BCE [44] South America: meat, eggs, feathers, manure, guarding, pest control, show, pets Tame, some physical changes
All bird eggs contain the following components: [1] The embryo is the immature developing chick; The amnion is a membrane that initially covers the embryo and eventually fills with amniotic fluid, provides the embryo with protection against shock from movement
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. [1] [2] [3] In colloquial English, they are known as the crow family or corvids.
The eggs are laid in early morning, usually at daily intervals. [29] On average, the eggs of the nominate species measure 32.9 mm × 23 mm (1.30 in × 0.91 in) and weigh 9.9 g (0.35 oz). [ 29 ] [ 30 ] Small for the size of the bird, they are typically pale blue-green, with close specks and spots of olive brown, but show much variation in ground ...
The Iberian magpie (Cyanopica cooki) is a bird in the crow family. It is 31–35 cm (12–14 in) long and similar in overall shape to the Eurasian magpie (Pica pica) but is slenderer with proportionately smaller legs and bill. It belongs to the genus Cyanopica.
The house crow (Corvus splendens), also known as the Indian, greynecked, Ceylon or Colombo crow, [2] is a common bird of the crow family that is of Asian origin but now found in many parts of the world, where they arrived assisted by shipping. It is between the jackdaw and the carrion crow in size (40 cm (16 in) in length) but is slimmer than ...
The black swan, Cygnus atratus is a large waterbird which breeds mainly in the southeast and southwest regions of Australia.An estimated one-quarter of all black swans pairings are homosexual and they steal nests, or form temporary threesomes with females to obtain eggs, driving away the female after she lays the eggs.
Birds have been domesticated and bred as poultry for use as food for at least four thousand years. The most important species is the chicken . It appears to have been domesticated by 5000 BC in northeastern China, likely for cockfighting, and only later used for food. [ 2 ]