<a href="https://en.wikipedia.org/wiki/%C5%9Awina" class="extiw" title="en:Świna">Świna</a> estruation
<a href="//commons.wikimedia.org/wiki/User:Specjal_b" title="User:Specjal b">User:Specjal b</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>