Medium sized gull, but bigger than the black-headed gull. Greenish legs and greyish yellow coloured bill.
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That's a good photo for comparing these two species, great to see them side-by-side.
Entomologist and biological recorder
Dear Martin, isn't it strange that you hardly see the Common Gulls, but you always see the Black Headed Gulls?
I thought for a long time that Common Gulls were misnamed - because they are not that common, but it turns out they get that name from their habit of feeding on common land.
Lat/Lng: 53.4, -2.3
OS grid ref: SJ8594