Black-headed Gull (<i><a href="//commons.wikimedia.org/wiki/Larus_ridibundus" class="mw-redirect" title="Larus ridibundus">Larus ridibundus</a></i>) in summer plumage, on <a href="//commons.wikimedia.org/wiki/Sylt" title="Sylt">Sylt</a>
Oliver Rummeyer
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>