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The house finch is a moderate-sized finch, 12.5 to 15 cm (5 to 6 in) long, with a wingspan of 20 to 25 cm (8 to 10 in). Body mass can vary from 16 to 27 g (9 ⁄ 16 to 15 ⁄ 16 oz), with an average weight of 21 g (3 ⁄ 4 oz).
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 ...
The breeding season begins later in the year than for any other finch and later than any other native North American bird, besides occasionally the sedge wren. [13] [26] This may be related to the abundance of seeds in the late summer months, as seeds represent most of their diet. [27]
During nest construction, some species seek out plant matter from plants with parasite-reducing toxins to improve chick survival, [234] and feathers are often used for nest insulation. [233] Some bird species have no nests; the cliff-nesting common guillemot lays its eggs on bare rock, and male emperor penguins keep eggs between their body and ...
A rare instance of brood-parasitism by a house finch has been recorded. [17] [37] The rate of brood parasitism is thought to be lower in more natural and concealed nesting locations. [17] Body parasites such as the larvae of blowflies feed on nestlings and the blood loss weakens nestlings. [17]
House wren: F F U U Winter wren: F F F F Marsh wren: F F F F American dipper: U U U U Golden-crowned kinglet: F F F F Ruby-crowned kinglet: U - C C Blue-gray gnatcatcher: F F U U Western bluebird: U U U U Swainson's thrush: C C F - Hermit thrush: C C C C American robin: C C C C Varied thrush - - F F Wrentit: C C C C Northern mockingbird: C C C ...
The purple finch population has been displaced from some breeding season habitats in the Eastern United States following the introduction of the house finch, which is native to the western U.S. and Mexico. The two species share a similar niche, with the house finch often outcompeting the purple finch during the summer. [11]
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