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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).
Within the genus the House Finch is the outgroup, meaning the Purple and Cassin's finches are more closely related to one another than either is to the House Finch. [5]
They found that the three North American rosefinches, namely Cassin's finch, purple finch, and house finch, formed a separate clade that was not closely related to the Palearctic rosefinches. They proposed moving the three species to a separate genus Haemorhous . [ 7 ]
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 ...
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. [26]
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]
In 1758, the Swedish naturalist Carl Linnaeus included the common linnet in the 10th edition of his Systema Naturae under the binomial name, Acanthis cannabina. [2] [3] The species was formerly placed in the genus Carduelis but based on the results of a phylogenetic analysis of mitochondrial and nuclear DNA sequences published in 2012, it was moved to the genus Linaria that had been introduced ...
The family Fringillidae are the "true" finches. The International Ornithological Committee (IOC) recognizes these 238 species in the family, distributed among three subfamilies and 50 genera. Confusingly, only 78 of the species include "finch" in their common names, and several other families include species called finches.