CATANIA A C
J Exp Anal Behav. 1964 Sep;7(5):361-6. doi: 10.1901/jeab.1964.7-361.
Several lines of evidence suggest that the pigeon is near-sighted for stimuli located in front of its beak and far-sighted for stimuli located to the sides of its head.
几条证据线索表明,鸽子对于位于其喙前方的刺激是近视的,而对于位于其头部两侧的刺激是远视的。