A male Mandarin duck (<i>Aix galericulata</i>) swimming in The Serpentine in Hyde Park, London.
<a href="//commons.wikimedia.org/wiki/User:Tristan_Surtel" title="User:Tristan Surtel">Tristan Surtel</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>