- any of several New World blackbirds of the genus Molothrus, especially M. ater, of North America, that accompany herds of cattle.
Origin of cowbird
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cowbird
The cowbird's tactics are probably to watch the movements of the parent bird.
Every cowbird is reared at the expense of two or more song-birds.
One of these is called the Argentine cowbird (Molothrus bonariensis).Our Bird Comrades
Leander S. (Leander Sylvester) Keyser
Despite this fact the Cowbird's eggs are often first to hatch.
It is little wonder that discerning people are not fond of the Cowbird.
- any of various American orioles of the genera Molothrus, Tangavius, etc, esp M. ater (common or brown-headed cowbird). They have a dark plumage and short bill