On February 23 there was a 1st winter Glaucous gull (Larus hyperboreus), In Peniche. There was also another bird, 3rd winter, presumably the same bird previously discovered. It can be seen here: http://www.heldercardoso.com/english-version/category/glaucous-gull
He began birding at the age of 11 and has never stopped since. His involvement in bird ringing has developed over the years and he has a special interest in moult in passerines. He currently works as a bird guide in Portugal and Spain and is an environmental consultant.
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