162 KEY TO THE BIRDS OF EASTERN NORTILT AMERICA. 
FAMILY FALCONID-E. 
Hawks, Falcons, Eagles, etc. 
Toes, four, three in front, one behind; toes, with strong, curved talons 
or claws; bill, with cere (skin-like covering at the base); bill, strongly 
hooked. 
Group 1. Wing, less than 8.50 inches long. 
Male. — . Femiale. 
tump and upper tail coverts, rufous brown; tail. more or less marked with 
rufous brown; tarsus, less than 1.50; second primary, longest. 
Sparrow Hawk. 
Falco sparverius. 
See No. 295. 
Rump and upper tail coverts, slaty brown; tarsus, over 1.50; fourth primary, 
longest. 
Sharp-shinned Hawk. 
Accipiter velox. 
See No. 266. 
