Zonotrichia albicollis

Zonotrichia albicollis, or the white-throated sparrow, is an emberizine sparrow that can be found in the eastern half of North America. White crowned sparrows breed in eastern Canada and the north central and north eastern United States. They winter in the eastern United States as well as parts of California, Arizona, New Mexico, Texas, and northern Mexico.
There are two different color morphs of the white-throated sparrow,the tan crowned white-throated sparrow and the white crowned white-throated sparrow. Unlike birds such as cardinals the color of the white-crowned sparrow does not identify whether it is male or female. There are males and females of both color phase. The reason why both color phases continue to exist is because all males tend to prefer white crowned females and all females tend to prefer tan crowned males.