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Image of the Day: The killer bird

4th March 2013


The Nazca booby, a Galápagos Island seabird, emerges from its shell ready to kill its brother or sister.

 

The Nazca booby, a Galápagos Island seabird, emerges from its shell ready to kill its brother or sister. Scientists have linked the murderous behaviour to high levels of testosterone and other male hormones found in the hatchlings.





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