Here are the answers to the specie's in the image;
SPECIE'S:
1.
Iceland Gull, 1st winter bird (note long primary projection, mostly dark bill and size)
2.
Glaucous Gull, 1st winter bird (note larger size, shorter primary projection and black tip to pink bill)
3.
Lesser Black-backed Gull, 1st winter birds.
4.
Herring Gull, birds of varying ages.
cheers, John
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