A male common goldeneye (<i>Bucephala clangula</i>) performing courtship ritual dance near Sonnisaari island in Oulu.
<a href="//commons.wikimedia.org/wiki/User:Estormiz" title="User:Estormiz">Estormiz</a>
Taken on 8 May 2011
<span class="int-own-work" lang="en">Own work</span>