The yellow-legged gull Larus michahellis, sometimes referred to as western yellow-legged gull to distinguish it from eastern populations of yellow-legged large white-headed gulls, is a large gull of Europe, the Middle East and North Africa, which has only recently achieved wide recognition as a distinct species. It was formerly treated as a subspecies of either the Caspian gull L. cachinnans, or more broadly as a subspecies of the herring gull L. argentatus. It is named after the German zoologist Karl Michahelles.
 
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