Fox R, Lehmkuhle S W, Bush R C
Science. 1977 Jul 1;197(4298):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.
立体深度感知在猎鹰身上得到了证明，猎鹰是一种具有双眼视觉的非哺乳动物。这一结果补充了近期关于鸟类视觉系统中双眼相互作用的生理学证据，并表明立体视觉可能是脊椎动物视觉的一个普遍特征，而非哺乳动物进化的独有产物。
