Clipped areas of original shown in green
<a href="//commons.wikimedia.org/wiki/User:Crisco_1492" title="User:Crisco 1492">User:Crisco 1492</a>, derivative work: <a href="//commons.wikimedia.org/wiki/User:Kreuzschnabel" title="User:Kreuzschnabel">Kreuzschnabel</a>
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Portrait_of_ring-billed_gull_(Larus_delawarensis),_Windsor,_Ontario,_2014-12-07.jpg" title="File:Portrait of ring-billed gull (Larus delawarensis), Windsor, Ontario, 2014-12-07.jpg">File:Portrait of ring-billed gull (Larus delawarensis), Windsor, Ontario, 2014-12-07.jpg</a>