common grackle

:  a North American grackle (Quiscalus quiscula) having glossy black plumage that especially in the adult male reflects a purple, green, or bronze iridescence … you know that those annoying, long-tailed blackbirds in your backyard are common grackles … — Michael Stirek, The Bismarck (North Dakota) Tribune, 11 June 2009 In North America, the … red-winged blackbird … and common grackle can form flocks approaching a million birds. — Kevin Cook, Bird Watcher’s Digest, January/February 1995 — see bronzed grackle, florida grackle, purple grackle