Cowbird chicks do best with two warbler nest mates -- not four, not zero, study finds

ScienceDaily
Sep 14, 2022, 12:16 am376 pts
Brown-headed cowbirds are generalist brood parasites, laying their eggs in the nests of many other bird species and letting the host parents raise their young. A new study seeks to understand the strategies cowbird chicks use to survive in prothonotary warbler nests when they hatch with different numbers of…

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