<p>A photograph taken from the belly of a small airplane allows biologists to count American white pelican nests at a colony at Bitter Lake in South Dakota. The dark dots are double-crested cormorants nesting with and among the pelicans.
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Photo credit: USFWS
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/51986662@N05">USFWS Mountain-Prairie</a>
Taken on 25 November 2013, 12:44
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usfwsmtnprairie/11055414785/">Counting Dots</a>