"In natural science the principles of truth ought to be confirmed by observations." (Linnaeus). "Though, preferably backed up by a series of high quality digital photos and video." (KerryBirding).
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Wednesday, 14 March 2012
Comparison of Kumlien's and Iceland gulls
Adult Kumlien's Gull (left) and adult Iceland Gull, Knightstown, Valentia Island, 11th March (Seamus Enright). The Kumlien's has been present since 16th February (see older posts HERE).