<p>Common starling (Sturnus vulgaris) standing at the entrance to its nesting hole.
</p>
Szpak (Sturnus vulgaris) stojący u wejścia do dziupli.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/125741467@N05">hedera.baltica</a> from Wrocław, Poland
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/hedera_baltica/18725511294/">Guarding the nest</a>