Male eclipse mallard duck (<i><a href="//commons.wikimedia.org/wiki/Anas_platyrhynchos" title="Anas platyrhynchos">Anas platyrhynchos</a></i>), Tsukuba, Japan
<a href="//commons.wikimedia.org/wiki/User:Materialscientist" title="User:Materialscientist">Materialscientist</a>
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<span class="int-own-work" lang="en">Own work</span>