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The top documents tagged [ground countsdetection]
American Oystercatcher Working Group. Timeframe: January/early February 2013 Follows protocol from 2003 survey with key modifications Survey windows:
213 views
Population Size and Winter Distribution of Eastern American Oystercatchers An Evaluation of Aerial Surveys To Meet the Monitoring Goals of the U.S. Shorebird
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Population Size and Winter Distribution of Eastern American Oystercatchers
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American Oystercatcher aerial survey 2012/2013
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