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Pollution Make Starlings More Attractive, Less Fit

A new study reveals the troublesome effects of pollution on the European starling.

By Jessica Pineda

Courtesy Rose Gordon
Male starlings that ate tainted worms suffered brain damage but produced a more attractive mating call.  

Scientists recently found that starlings that ingested estrogen-tainted earthworms became brain damaged, and paradoxically, were more attractive to females. The affected male starling produced a far more complex mating song, according to a recent article published by the Public Library of Science.

Because female starlings choose mates based on the complexity of a male’s song and with their singing ability, the affected starlings are breeding more. The downside is the chemicals weaken the starlings’ immune systems and cause other anatomical and behavioral issues.

The affected birds are more likely to reproduce sick offspring and the researchers could not predict how this would affect the already declining wild population of starlings in the coming years.

Posted: March 5, 2008, 8a.m. EST


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Pollution Make Starlings More Attractive, Less Fit

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Reader Comments
Poor little birdies!
joan, franklin square, NY
Posted: 2/6/2011 7:00:21 PM
This is a very interesting article and I'm glad it was pisted. Although it is sad these starlings are ill it is something I would like to read more about.
Tessa, Washago, CA
Posted: 4/28/2008 2:04:32 PM
Poor birds.
Rachael, Grandville, MI
Posted: 4/18/2008 9:37:43 AM
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