Stereopsis in the falcon

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Science  01 Jul 1977:
Vol. 197, Issue 4298, pp. 79-81
DOI: 10.1126/science.867054


Stereoscopic depth perception is demonstrated in the falcon, a non-mammalian with binocular vision. This result complements recent physiological evidence for binocular interaction in the bird visual system, and suggests that stereopsis may be a general attribute of vertebrate vision and not an exclusive product of mammalian evolution.

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