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Black-backed Gulls

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Old Sunday 8th January 2017, 18:31   #1
Victor Soares
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Black-backed Gulls

Can you please guide me with these two ... I am pretty sure the single image with the dark back is a LESSER BBG due to the yellow legs but the "1st winter" one I think may well be a GREATER BBG (red legs) but I am not 100% sure it is not a HERRING gull or even a CASPIAN gull (one has been seen in the exact location yesterday) .............. please assist.
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Old Sunday 8th January 2017, 18:41   #2
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1st winter/2cy Herring Gull - note pale inner primaries, & adult LBBG
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Old Sunday 8th January 2017, 18:42   #3
Jeff hopkins
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A GBBG would have a lot less streaking on the head, too.
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