204. APPENDIX 
and curved downward; wings long; tail long, soft, and 
rounded ; toes in pairs. (Ridgway.) 
Insectivorous. Sexes alike. Found on trees. 
25. Bubonide: Ow1s. 
Mostly larger than a robin, a few smaller ; bill hooked ; 
eyes directed forward and surrounded by radiating fea- 
thers; plumage soft and lax; feathers beside forehead 
often stand up like ear tufts; legs usually feathered ; 
feet sometimes feathered. (Ridgway.) 
Sexes alike. Flesh eaters. Usually nocturnal. Most 
species found in holes in trees or old buildings. 
26. Strigide : Barn Ow.s. 
Much larger than a robin; bill hooked; eyes very 
small ; triangular-shaped eye disk ; tail emarginate ; claws 
sharp and strong; very downy plumage, (Ridgway). 
Food: mice and other small mammals. Sexes alike. 
Exclusively nocturnal. Found in barns and deserted 
buildings. 
27. Falconide : HAwks and EAGuss. 
(There are several subfamilies.) 
Mostly very large birds; bill strongly hooked; eyes 
directed sideways; eyelids with lashes; toes never fea- 
thered. (Ridgway.) 
Carnivorous and insectivorous. Sexes usually alike, 
but female larger. 
28. Cathartide: AMERICAN VULTURES. 
Large as a turkey, one species much larger; whole 
head and sometimes neck bare of feathers; eyes promi- 
nent; tail rounded. (Ridgway.) 
Food: carrion. Found sailing about in the air. 
