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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]
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 ] Species
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.
Purple finch: F F F F House finch: C C C C Red crossbill: F F C C Pine siskin: F F C C Lesser goldfinch: F F F F Lawrence's goldfinch: F F - - American goldfinch: F F C C Evening grosbeak - - F F House sparrow: C C C C
Gray-crowned rosy-finch, Leucosticte tephrocotis (A) [8] House finch, Haemorhous mexicanus (Native to the southwestern U.S.; introduced in the east) Purple finch, Haemorhous purpureus; Common redpoll, Acanthis flammea (R) Hoary redpoll, Acanthis hornemanni (A) Red crossbill, Loxia curvirostra (R) White-winged crossbill, Loxia leucoptera (R)
Gray-crowned rosy-finch, Leucosticte tephrocotis (A) Black rosy-finch, Leucosticte atrata (A) House finch, Haemorhous mexicanus (n) Purple finch, Haemorhous purpureus. Eastern (purpureus) group (A) Cassin's finch, Haemorhous cassinii (n) Common redpoll, Acanthis flammea (A) Red crossbill, Loxia curvirostra (n) White-winged crossbill, Loxia ...
Gray-crowned rosy-finch, Leucosticte tephrocotis (A) House finch, Haemorhous mexicanus (native to the southwestern western U.S.; introduced in the east) Purple finch, Haemorhous purpureus; Common redpoll, Acanthis flammea (VR) Red crossbill, Loxia curvirostra; White-winged crossbill, Loxia leucoptera (VR) Pine siskin, Spinus pinus