The Common Grackle, Quiscalus quiscula, is a large icterid. The 32 cm long adult has a long dark bill, pale yellowish eyes and a long tail; its plumage is an iridescent black, or purple on the head. The adult female is slightly smaller and less glossy. The breeding habitat is open and semi-open areas across North America east of the Rocky Mountains. The nest is a well-concealed cup in dense trees or shrubs, usually near water; sometimes, the Common Grackle will nest in cavities or in man-made structures. It often nests in colonies, some being quite large.

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