Gull-billed Tern <i><a href="//commons.wikimedia.org/wiki/Gelochelidon_nilotica" title="Gelochelidon nilotica">Gelochelidon nilotica</a></i>, winter plumage; San Blas, Nayarit, Mexico
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9919745@N03">Ron Knight</a> from Seaford, East Sussex, United Kingdom
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/sussexbirder/8079380111/">Gull-billed Tern</a>