126 KEY TO FAMILIES 
Fia. 49. 
b. Midsletee without a comblike edge. ... Family Strigide, 
p. 309. 
B. Eyes not set in a feathered disk, tarsus largely bare; plumage 
firm and close. 
a. Front of tarsus with square scales. 
a, Bill not strongly hooked; toe-nails comparatively weak; 
nostrils large, piercing the bill; head and more or less of 
neck bare (Fig. 49)... . Family Cathartide: AMERICAN 
VULTURES, p. 286. 
a*, Bill strongly hooked (Fig. 50); hind-toe generally as long as 
or longer than the shortest front one; claws large; head 
not bare. . . . Family Buteonide: Hawxs, Eacuss, Krres, 
b. Front of tarsus with rounded scales. 
bt. Soles of feet thickly set with sharp spicules (Fig. 20).... 
Family Pandionide: Ospreys, p. 307. 
b2. Soles of feet without spicules. ... Family Falconide: 
Fatcons, CARACARAS, etc., p. 303. 
Order XIII. Psittaci.—Parnrots, 
PaROQuEts, etc. 
Toes four, two in front, two 
behind; bill strong, hooked, 
with a cere; lower mandible 
scoop-shaped (Fig. 51)... . 
Family Psittacide: Parrots, 
PaRoQusEts, p. 317. 
Fie. 51, 
ie 
lao 
Pal 
“fn 
3 
= 
Fia. 52. 
Order XIV. Coccyges.—Cuckoos, Kine- 
FISHERS, etc. 
Toes four, the middie and the outer ones 
Joined for half their length (Fig. 52) or 
two in front and two behind (Fig. 53); bill 
without a cere; tail-feathers not stiff and 
Fria. 53, pointed. 
