Kumlien's Gull, Dernford Reservoir, 22nd November 2020 © Steve Cooper/Andrew Dobson
'Please can you put these photo's of the 'Iceland Gull ' at Dernford which from the points made below I believe to be a Kumlien's Gull..
'Dark markings on P7-P10 reaching and darker than primary coverts, most importantly on the outer webs. The outer primaries form a contrast with the clean inner primaries. Solid dark tail contrasting with white rump '
The tail shot should be credited to Andrew Dobson.' SC
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