The Killdeer (<i>Charadrius vociferus</i>) is a plover of open fields. It guards its ground nest through a bit of deception. The adult feigns a broken wing to distract a predator. When the predator comes near the adult, the Killdeer flies away. When I saw this Killdeer doing a broken wing display, I stopped, turned on my zoom lens, and captured this.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/46183897@N00/">Robert Nunnally</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/46183897@N00/35164781221/">Killdeer wing display, June 13, 2017 Breckinridge - Flickr</a>