American sparrows are a group of mainly New World passerinebirds, forming the family Passerellidae. American sparrows are seed-eating birds with conical bills, brown or gray in color, and many species have distinctive head patterns.
Although they share the name sparrow, American sparrows are more closely related to Old World buntings than they are to the Old World sparrows (family Passeridae). American sparrows are also similar in both appearance and habit to finches, with which they sometimes used to be classified.
Genera and species
The International Ornithological Congress (IOC) recognizes these 136 species in the family, distributed among 27 genera in the following sequence. One extinct species, Bermuda towhee, is included. The North American and South American classification committees of the American Ornithological Society (AOS) do not recognize all of these species, use some different common names, and assign other species to different genera. The AOS also organizes the list in a different sequence.
^Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, J. F. Pacheco, C. Ribas, M. B. Robbins, F. G. Stiles, D. F. Stotz, and K. J. Zimmer. Version 11 February 2020. A classification of the bird species of South America. American Ornithological Society. http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved February 12, 2020