Gorrión Corona Blanca

The handsome White-crown is a favorite not only of bird-watchers but of laboratory scientists. Much of what we know about the physiology of bird migration has been learned from laboratory experiments with this species. The northern, northwestern, and mountain subspecies of White-crowned Sparrows have slightly different head patterns and songs. Song dialects vary locally as well. In the Arctic, where the sun does not set during the breeding season, these sparrows sing all night long; however, White-crowns farther south, in the Pacific Northwest, also sing frequently during the dark May nights. In the East, these birds are much less numerous than White-throated Sparrows, but flocks of White-throats often contain a few of these slender, elegant birds. Much of their feeding is done on the ground but, like White-throats, they will respond to a squeaking noise made by an observer by popping up to the top of a bush.