Common grackles are found in much of North America east of the Rocky Mountains.

Where are grackles found?

The Common Grackle breeds across North America east of the Rocky Mountains, withdrawing from the northern and northwestern portion of its range in winter. It is considered a partial migrant throughout the southeastern part of its range, moving relatively short distances between breeding and wintering sites.

Are common grackles rare?

A widespread resident east of the Rockies in southern Canada and the United States, the Common Grackle has been expanding its range westward in recent decades. ... Common Grackle nests in the lowlands of northeastern British Columbia, east of the continental divide, but is very rare to casual elsewhere in the province.