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. 2019 Apr 9;5(4):46. doi: 10.3390/jimaging5040046

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Field of view (in the horizontal plane) of (a) a pigeon (Columba livia) that scans for predators and (b) a tawny owl (Strix aluco) looking for prey. Note the differences in total field of view and binocular vision (after [56]).