An isolated <a href="https://en.wikipedia.org/wiki/Mallard_Duck" class="extiw" title="en:Mallard Duck">Mallard Duck</a>, female ducks are already in the nest.
<a href="//commons.wikimedia.org/wiki/User:Daniel_VILLAFRUELA" title="User:Daniel VILLAFRUELA">Daniel VILLAFRUELA</a>.
CC BY-SA 3.0 fr
<span class="int-own-work" lang="en">Own work</span>.