Range. - Mexico; north in summer to the Lower Rio Grande in Texas.

This parasite is larger than the Cowbird, being 9 inches long, and is glossy black with brassy reflections on the upper and under parts. They are abundant in southern Texas where they deposit their eggs in the nests of other birds, apparently preferring those of Orioles; their eggs are pale bluish green, unmarked; size .90 x .70.