Two Mallard ducklings (<i>Anas platyrhynchos</i>) at the University of Warwick.
<a href="//commons.wikimedia.org/w/index.php?title=User:Cepheus&amp;action=edit&amp;redlink=1" class="new" title="User:Cepheus (page does not exist)">Cepheus</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>