An adult swallow arriving at a mud nest containing four chicks. Two of the chick have their mouths open expecting to be fed.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/26290117@N03">brdavids</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/26290117@N03/3975112385">Hunger!</a>