katwijk aan zee 12-05-2013

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marsmuusse
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Joined: Sun Sep 27, 2009 12:43 pm

katwijk aan zee 12-05-2013

Post by marsmuusse » Sun May 12, 2013 7:17 pm

Mid May, good time for arriving immature birds, They can take a rest at Katwijk, which is away from the hustle in the colonies. We have had strong wind last 3 days, which is normally good for gull concentrations at the beach. However, with a bit of sunshine as well today, much disturbance from people, dogs, horses, cars, electronic miniature vehicles, etc.
Today about 60 birds, including 2 michahellis (2CY, 4CY) and one fuscoides 3CY.
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Grey tone often difficult to determine from images, but 3CY bird (left) obviously darker than graellsii LBBG (adult right) and for comparison Herring Gull in background.
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marsmuusse
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Re: katwijk aan zee 12-05-2013

Post by marsmuusse » Sun May 12, 2013 7:29 pm

LBBG fuscoides, probably 3CY bird with black band on bill and black in tail feathers. P1-P2 in left wing old 2nd gen-like, brown bleached outerwebs, but greyish innerwebs with a dark subterminal band (but hard to get a good picture of these 2 feathers); P3-P7 with bold white tips; division at P7/P8, with P8-P10 no white tips, but P10 with mirror. P8-P10 not extermely worn, rather glossy looking.
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overcasted clouded conditions
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