The Senses 211 
all owls can see very well, even in sunshine, although of 
course their eyes are especially adapted for use in the dim 
light of the evening and of thestars. In NovaScotia Ihave 
noticed Barred Owls flying about and feeding at noonday. 
Fig. 152.—Duck Hawk. (Courtesy of N. Y. Zoological Society.) 
Compare the alert expression with the sloth in Fig. 151. 
Birds have well-developed lachrymal glands, although 
it is seldom that they actually shed tears. Still I have 
seen a flamingo in a flying-cage weeping copiously from 
terror, anticipating all sorts of torture from a harmless 
