harris's sparrow Zonotrichia querula

Large sparrow that is largely restricted to the middle of North America. Breeds in boreal forest and shrubbery in the far north of central Canada, and winters in shrubby or weedy areas in the southern Great Plains. Adults have distinctive black face and pink bill. Immatures have plain brown face and splotchy black bib. White belly with dark streaks on sides. Dark crown feathers are beautifully edged with white. Visits feeders; occasionally strays east or west of normal range.