AN INTRODUCTION TO THE BIRD. Q25 
ing either front or rear on the perch; so also has 
the osprey only in the hawks, but it has no disk 

Heads of owls. 
about the eye, which is well on the side of the head. 
(30) But, referring again to (25)— 
If with this hooked beak (the cere is often feath- 

(a) Foot of owl; (6) foot of hawk. 
ered) we find the outer toe permanently reversed, the 
bird is a Parrot. 
(31) Now, if the 
beak is not strongly 
hooked, as at (25), you 
have two classes. If 
the toes are normal- 
ly arranged, pass on 
to (40). Head and foot of parrot. 

