THE PERCEPTION OF SPACE 



681 



Figs. 820 to 822. — Laterality and Frontality in Birds. 



Fig. 820.— The Barbarj^ turtle dove, Streptopelia roseogrisea. 



A bird with laterally directed eyes and panoramic fields (Zool. Soc. 



London). 



Fig. 821. — The Chilean eagle, Gernnoaetus 

 (photograph by Michael Solej'). 



Fig. 822. — Savigny's eagle-owl. Bubo as- 

 Cdlaphus (Zool. Soc, London). 



Birds of prey with frontally directed eyes and highly develoj^ed binocularity 



and stereoscopy. 



