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The house finch (Haemorhous mexicanus) is a North American bird in the finch family.It is native to Mexico and southwestern United States, but has since been introduced to the eastern part of North America and Hawaii; it is now found year-round in all parts of the United States and most of Mexico, with some residing near the border of Canada.
The eggs are incubated by the female alone, though the male brings her food as she nests, and most mating pairs raise only one brood each year. [21] The chicks hatch 12–14 days after incubation begins. Like all passerines, the chicks are altricial; they are hatched naked, with reddish bodies, pale grey down, and closed eyes. [31]
After mating, the female will lay a clutch of about 4–8 eggs. Both parents help brood the eggs during the daytime, and it is the female who stays on the eggs at night. When the eggs hatch, both parents care for the young. Gouldian finches leave the nest after between 19 and 25 days and are completely independent at 40 days old. [24]
A flying paradox, the house finch is both native and introduced to North America. Originally native to Mexico and the Western United States, house finches were shipped to New York City and sold as ...
Cassin's finch Male Female Haemorhous cassinii (Baird, 1854) western North America as far south as northern New Mexico and Arizona; also Southern California near Baja California. Size: Habitat: Diet: LC Purple finch Male Female Haemorhous purpureus (Gmelin, 1789)
Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...
The egg is not retained in the body for most of the period of development of the embryo within the egg, which is the main distinction between oviparity and ovoviviparity. [1] Oviparity occurs in all birds, most reptiles, some fishes, and most arthropods. Among mammals, monotremes (four species of echidna, and the platypus) are uniquely oviparous.
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.