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Tropical birds waited for land crossing between North and South America: UBC study
Date:12/9/2009

in the rates of interchange after the land bridge completion.

"This is a bit surprising," says co-author Dolph Schluter, UBC zoology professor and Canada Research Chair in Evolutionary Biology. "Couldn't the birds have flown across the gap? Some did, but most tropical birds waited for the land crossing."

The researchers believe the inability of many tropical birds to fly long distances across open water some are reluctant even to cross rivers as narrow as 200 metres may have contributed to the few north-bound movements prior to the land bridge completion.


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Contact: Brian Lin
brian.lin@ubc.ca
604-822-2234
University of British Columbia
Source:Eurekalert

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