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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.
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]
The clutch is typically 4–6 eggs, which are whitish with reddish-brown speckles. [23] They have a smooth surface and are slightly glossy. [22] The average size is 17.3 mm × 13.0 mm (0.68 in × 0.51 in) with a calculated weight of 1.53 g (0.054 oz). [22] The eggs are incubated for 11–13 days by the female, who is fed by the male.
Birds do not act aggressively toward predators within their territory; their only reaction is alarm calling. Predators include snakes, weasels, squirrels, and blue jays, which may destroy eggs or kill young, and hawks and cats, which pose a threat to both young and adults. The oldest known American goldfinch was 10 years and 5 months old.
The species is a brood parasite which lays its eggs in the nests of estrildid finches, especially waxbills. Unlike the common cuckoo, it does not destroy the host's eggs. Typically, 2–4 eggs are added to those already present. The eggs of both the host and the whydah are white, although the whydah's are slightly larger.
Eggs. The redpoll is a small brownish-grey finch with dark streaks and a bright red patch on its forehead. It has a black bib and two pale stripes on the wings. Males' breasts are often suffused with red. Adults measure between 11.5 and 14 centimetres (4.5 and 5.5 in) in length and weighing between 12 and 16 grams (0.42 and 0.56 oz).
It builds its nest in a shrub or tree, laying 3–5 eggs. It forms flocks outside the breeding season, sometimes mixed with other finches. The food is mainly seeds, and, in the breeding season, insects. This small serin is an active and often conspicuous bird.
The Society finch (Lonchura striata domestica), also known as the Bengali finch or Bengalese finch, is a domesticated subspecies of finch. It became a popular cage and trade bird after appearing in European zoos in the 1860s through being imported from Japan, though it was domesticated in China. Coloration and behavior were modified through ...