brown-headed cowbirds are medium-sized songbirds native to the americas. cowbirds are notorious for being brood parasites. cowbirds lay their eggs in the nests of other species, and allow them to raise their chicks. some species have grown wise to this, and will remove the egg – and some of the time, the cowbird parents will enact revenge by destroying the rest of the eggs in the nest. cowbirds are named for their tendency to follow large animals to catch the insects they stir up.

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