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  • Stereopsis in the Falcon
    Fox, Robert; Lehmkuhle, Stephen W.; Bush, Robert C.

    Science (American Association for the Advancement of Science), 1977-Jul-01, Volume: 197, Issue: 4298
    Journal Article

    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.