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Shy Animals Skew Population Estimates Sunday, June 14, 2009 - Ehud Rattner Home >> Headlines >> Biology   
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Ecologists may be underestimating species population numbers because only bolder animals are caught in their traps. At a field site near Budapest, Laszlo Garamszegi, now at the Donana Biological Station in Seville, and his colleagues placed caged female collared flycatchers on unoccupied nest boxes that had a male bird in attendance. They targeted 41 males, 33 of which responded to their female. (source: nature.com)
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