KEY TO FAMILIES OF LAND BIRDS 



109 



ORDER RAPTORES: VULTURES, EAGLES, 

 HAWKS. OWLS, ETC. 



1. Head naked, feet not suited for 



grasping . . . Cathartidae : 



Vultures, p. 144. 



r. Head feathered, feet especially 

 adapted for grasping. 



Fig. 132. 



2. Eyes not surrounded by striking 

 discs of radiating feathers. 

 Falconidae: Falcons, 

 Kites, Hawks, Eagles, 



etc., p. 140. Fig. 133. 



2'. Eyes surrounded by striking discs 

 of radiating feathers. 



3. Inner edge of middle claw 



toothed . . . Strigidee : 



Barn OtvIs. p. 173. 



3'. Inner edge of middle claw not 



toothed . . Bubonidae : 



Horned Owls, etc., 



p. 175. 



Fig. 135. Fig. 136. 



ORDER PSITTACI: PARROTS. 



Toes 4, 2 in front, 2 behind ; outer toe perma- 

 nently reversed Psittacidae : 



Parrots, p. li)2. 



ORDER COCCYGES : CUCKOOS, 

 TROGONS, KINGFISHERS, 

 ETC. 



ViK- 137. 



Fig. 138. 



1. Toes 4, ;; pointing forward, 1 l).uk Alcedinidae : 



Kingfishers, p. lt>8. 



i r. Toes 4, 2 pointing forward, 2 back. 



Pig. 139. 



