If anyone is interested in ageing Ring-billed Gulls, look on Birdguides (and Surfbirds I presume) at the pics of the bird that is currently at Bedmannarch Bay/Penryhn Coastal Park on Anglesey. It had been labelled as a second winter, but it clearly isn't - compare to Gulls or Collins.
Dave
Ring-billed Gull - ageing
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