"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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Saturday 20 July 2013
Med. and Ring-billed Gulls, Black Rock
Ring-billed Gull, Black Rock, 20th July 2013 (David O'Connor).
Juvenile Mediterranean Gull, Black Rock, 20th July 2013 (David O'Connor).
