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Counting the invisible by sound -- a new approach to estimate seabird populations
Date:4/9/2014

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Seabirds nest in places that are inaccessible for most humans - vertical cliffs and remote islands surrounded by raging waves. Worse still, many seabirds lay their eggs in burrows or cavities where they are protected from inclement weather and invisible for researchers. Hidden under rocks or in burrows during the day, and flying around only during dark nights - counting these birds is a researcher's nightmare.

Despite their cryptic behaviour, the seabirds are ill-prepared to fend off furry invaders. Humans have brought cats and rats to many islands around the world, where the cats and rats roam freely and kill seabirds. Especially those seabirds that nest in burrows are often unable to escape, and many species have disappeared from islands where cats or rats have been introduced.

Although researchers have known for decades that many seabirds are in trouble, it is surprisingly hard to put a n
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Contact: Dr. Steffen Oppel
steffen.oppel@rspb.org.uk
Pensoft Publishers
Source:Eurekalert  

Page: 1 2 3 4

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Counting the invisible by sound -- a new approach to estimate seabird populations
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