The boat-tailed grackle (Quiscalus major) is a passerine bird of the family Icteridae found as a permanent resident on the coasts of the Southeastern and Mid-Atlantic United States.

[3] Boat-tailed grackles have established significant populations in several United States Gulf Coast cities and towns, [citation needed] where they can be found foraging in trash bins, dumpsters, and parking lots.

The nest is a well-concealed cup in trees or shrubs near water; the average clutch size is just over three eggs.

The common grackle, with which the boat-tailed species often overlaps along the Atlantic coastline, is noticeably smaller and shorter-tailed, as well as lacking the domed head shape.

They are omnivorous, eating insects, minnows, frogs, eggs, berries, seeds, grain, and even small birds.