Amazon.com Widgets

« Links With Your Coffee | Main | P.Z. Myers - Speaking Truth to Absurdity »

Brown-headed Cowbird

A Juvenile Brown-headed Cowbird, perhaps sitting next to its foster mom, a House Sparrow.

Brown-headed Cowbird_2010_08_29_17-25-07

Brown-headed Cowbird

The Brown-headed Cowbird is a stocky blackbird with a fascinating approach to raising its young. Females forgo building nests and instead put all their energy into producing eggs, sometimes more than three dozen a summer. These they lay in the nests of other birds, abandoning their young to foster parents, usually at the expense of at least some of the host’s own chicks. Once confined to the open grasslands of middle North America, cowbirds have surged in numbers and range as humans built towns and cleared woods.


 

Comments

Hello Norm, regarding the Cowbird, you may find this segment of RadioLabs "Oops!" episode of Sept 3, 'Weighing Good Intentions', interesting: http://www.wnyc.org/shows/radiolab/episodes/2010/09/03/segments/156566

Hey, thanks for the link that was interesting.

Navigation

Support this site

Google Ads


Powered by Movable Type Pro

Copyright © 2002-2017 Norman Jenson

Contact


Commenting Policy

note: non-authenticated comments are moderated, you can avoid the delay by registering.

Random Quotation

Individual Archives

Monthly Archives