Two of the young Red-tailed hawk chicks (Buteo jamaicensis) are clearly visible but only the beak of the third sibling is showing.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/32541690@N02">Alan Vernon</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/alanvernon/4791784730/">Triplet Red-tailed Hawk chicks in their nest.</a>