The Harris's Hawk is famous for its remarkable behavior of hunting cooperatively in "packs", consisting of family groups. Most raptors are solitary hunters.  Reference <a href="https://en.wikipedia.org/wiki/en:Harris" class="extiw" title="w:en:Harris">en.wikipedia.org/wiki/Harris's_Hawk</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/32541690@N02">Alan Vernon</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/alanvernon/5535805854/">Harris's Hawk (Parabuteo unicinctus).......2 of 4 in set</a>