Three species of migratory duck have shifted their wintering grounds northward in response to increasing temperatures, say scientists.
The birds - the tufted duck, goosander and goldeneye - are common in Britain and Ireland during northern Europe's winter.
But their numbers in these countries have shrunk in the last 30 years.
See full Article: http://www.bbc.co.uk/news/science-environment-22484907
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