A Moment of Science

Posts tagged cowbirds

April 14, 2010

 

cowbirds_074

How Does A Cowbird Know It’s A Cowbird?

Cowbirds lay their eyes in the nests of other birds... so how do baby cowbirds know they are cowbirds?

July 14, 2005

 

How Does a Cowbird Know It’s a Cowbird?

Brown-headed cowbirds are robin-sized black birds whose range covers most of North America. From a people’s point of view cowbirds are what we might call deadbeat parents. Cowbirds lay their eggs in the nests of other bird species, and the cowbird nestlings are raised by the foster parents. Since the cowbirds spend their formative months with birds of an entirely different species which has separate habits, songs, etc., how does a cowbird know it’s a cowbird? Learn more on this Moment of Science.

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