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In 2016, she and her husband published a study describing the four sexes that make up the white-throated sparrow species and how a genetic mutation had tied coloring differences to distinct behavioral activities, resulting in mating pairs only forming between differently colored sparrows. [5]
Close-up of a white-throated sparrow head, with bright white throat and yellow lore White-throated sparrows prefer to forage on the ground. The white-throated sparrow (Zonotrichia albicollis) is a passerine bird of the New World sparrow family Passerellidae. It breeds in northern North America and winters in the southern United States.
Rufous-collared sparrow: south-east of Mexico to Tierra del Fuego, and on the island of Hispaniola Zonotrichia querula: Harris's sparrow: north part of central Canada (primarily the Northwest Territories and Nunavut, ranging slightly into northern Manitoba and Saskatchewan) †Zonotrichia robusta: Miramar Formation, Argentina (Pleistocene) [3]
The white-throated sparrow (Zonotrichia albicollis), a passerine bird of the American sparrow family Passerellidae, shows a clear dimorphism in both sexes throughout its large range. Their heads are either white-striped or tan-striped.
White-throated sparrow, Zonotrichia albicollis, ---SE Arizona biome, (winter range) sw–06 White-crowned sparrow, ... The sexes usually have distinct plumages. There ...
White-crowned sparrow, Zonotrichia leucophrys; White-throated sparrow, ... The sexes usually have distinct plumages. Summer tanager, Piranga rubra;
White-throated sparrow, Zonotrichia albicollis; Sagebrush sparrow, ... The sexes usually have distinct plumages. Thirteen species have been recorded in Wyoming.
White-throated swift, ... Harris's sparrow, Zonotrichia querula; White-throated sparrow, ... The sexes usually have distinct plumage.