Cowbirds (IMAGE)

University of Illinois at Urbana-Champaign, News Bureau

Cowbirds

Caption

Researchers discovered that brood parasites in uncertain climates choose host parents differently, especially when temperatures are variable. In these conditions, brood parasites have evolved to lay their eggs in a greater number and diversity of host nests. Pictured: A female, left, and male cowbird sit on a wire fence.

Credit

Photo by Michael Jeffords and Sue Post

Usage Restrictions

Photo by Michael Jeffords and Sue Post

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