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Observed: 12th May 2010 By: Vinny
Added: 13th May 2010
Sand Martins at their artificial nest holes. There used to be a huge colony near to this site, but it was wiped out by human encroachment and erosion of the sandbank. These holes were constructed a few years ago on the edge of a lake, and have been a huge success, with over 400 birds nesting this year. Note how they use their tails for stability when perching on the edge of the hole - a bit like a woodpecker.