Communal nest: Hundreds of small birds live together in these nests, often with hopeful birds of prey looking on.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/35034359904@N01">quinn norton</a>
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/35034359904@N01/38800/">https://www.flickr.com/photos/35034359904@N01/38800/</a>