Don Edwards San Francisco Bay National Wildlife Refuge
This is a comprehensive field guide to the all known bird species that preside or migrate through this Refuge.
Lesser Goldfinch
The Lesser Goldfinch or Dark-backed Goldfinch (Carduelis psaltria) is a very small songbird of the Americas. Together with its relatives the American Goldfinch and Lawrence's Goldfinch, it forms the American goldfinches clade in the genus Carduelis sensu stricto.
American Goldfinch
The American Goldfinch (Carduelis tristis), also known as the Eastern Goldfinch, is a small North American bird in the finch family. It is migratory, ranging from mid-Alberta to North Carolina during the breeding season, and from just south of the Canadian border to Mexico during the winter.
House Finch
The House Finch (Haemorhous mexicanus) is a bird in the finch family Fringillidae, which is found in North America. This species and the other "American rosefinches" are placed in the genus Haemorhous by the American Ornithologists' Union but have usually been included in Carpodacus.
