'Warmer sea' killed thousands of pelicans in Peru
9 May 2012 Last updated at 22:29 BST
Scientists believe that hotter than average ocean temperatures caused the death of nearly 4,500 pelicans along the coast of Peru.
The experts say this would have driven a type of anchovy deeper into the sea, making it more difficult for young pelicans to catch them.
Mattia Cabitza reports.
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