Bert van Leeuwen
The yellow-legged gull (geelpootmeeuw) is a large gull found in Europe, the Middle East and North Africa which has only recently achieved wide recognition as a distinct species.
Yellow-legged gulls are externally similar to herring gulls but have yellow legs. They have a grey back and are much whiter-headed in autumn, and have more extensively black wing tips with few white spots, just as lesser black-backed. There is a red ring around the eye. The call is a loud laugh, deep and nasal.