a very smart bird, showing all the expected features although I never saw its underwing. Dark bill, a bit foreshortened in this image, very white head and underparts, a few neck streaks forming a shawl, grey mantle with a few dark centres, fairly uniform brown coverts, black tertials with thin thumbnail edges, long black primaries, ventral bulge and thin fleshy legs. |
showing the long thin dark bill and a clearer view of its tertials |
to me a classic bird |
differences from other large gulls might be subtle but combined make an attractive package |
fewer gulls in the Cuckmere today |
second-winter Lesser Black-backed Gull, not the most familiar of plumages |
colour-ringed Lesser Black-backed Gull 6W, also seen here on 17 December. It was ringed as an adult male in Oost-Vlaanderen, Belgium in June 2011, and seen in Zeeland, Holland this June and in northern France (near the Belgian border) in September |
colour-ringed Lesser Black-backed Gull, I wasn't able to read any of it, likewise a red-ringed bird in the flock (with white characters so not North Thames, maybe from Suffolk) |
sleeping Yellow-legged Gull |
another sleeping Yellow-legged Gull but at least this one was standing up |
Wednesday 21st. A strong wind and an afternoon high tide seemed ideal for large gulls roosting in the Cuckmere and so it proved, but an improving forecast didn't materialise and viewing conditions were poor. The flock was also in the far side of the field opposite Harry's Bush but walking round to the river bank would have meant viewing into the drizzle and would probably have disturbed the flock anyway. As it was they flew four times, most soon returning. I picked out 3 birds that I considered to be Caspian Gulls, a third-winter, fourth-winter and adult, and two adult Yellow-legged Gulls. Poor images follow, much imagination is required ... Two Ravens flew over calling providing a nice distraction.
a lot of large gulls in the Cuckmere, I estimated about 1300 of which 1100 were Great Black-backs |
third-winter Caspian Gull (left hand bird), primarily aged by brownish tones on the coverts. Structurally the bird was all one would expect of this species. Its small white head, small dark eye, long thin bill and anaconda neck are evident in this image. It also had long thin legs, a ventral bulge and an attenuated rear end/long wings |
the same bird |
the same bird preening far left and the fourth-winter head on far right |
the fourth-winter, structurally very similar but with uniform grey upperparts without browner coverts |
the same bird, aged as a fourth-winter by the black band near the tip of the bill, otherwise as an adult from what I could see |
the same bird in front of a presumed argentatus Herring Gull, note the similar mantle colour |
adult Caspian Gull, front-centre, showing amongst other features small white head, small dark eye, washed out bill, anaconda neck and long legs |
the same bird |
Yellow-legged Gull in the Cuckmere |
by now the light was truly awful |
Lancing College in the mist |
argentatus Herring Gull and 'ring-billed' Common Gull on the Adur |
North Thames Herring Gull S8WT on the Adur |
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