Definition of great–tailed grackle
: a large, long-tailed grackle (Quiscalus mexicanus) that occurs from the southwestern U.S. to northern South America and closely resembles the boat-tailed grackle Other native species have grown more abundant and spread their range, like the great-tailed grackle, a bird with a long, keel-shaped tail that is common in Mexico. With the spread of agriculture and human settlement, the great-tailed grackle has spread slowly northward. — Hector Tobar, The Los Angeles Times, 31 Mar. 2009
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