Family FALCONID.^. Hawks, Falcons, 

 Eagles, Kites, etc. 



Toes, four, three in front, one behind; toes, with strong, curved 

 talons or claws; bill, with cere (hard skin-like covering at the base 

 of upper mandible through which the nostrils open); bill, hooked. 



* GROUP 1. Wing, less than 8.50 inches long. 



Male. Sparrow Hawk. Female. 



Rump and upper tail coverts, rufous brown; tail, more or less 

 marked with rufous brown; tarsus, less than 1.50; second primary, 

 longest. Falco sparverius. 



American Sparrow Hawk. 



See No. 171. 



Rump and upper tail coverts, slaty brown; tarsus, over 1.50: 

 iourth primary, longest. Accipiter velox. 



Sharp-shinned Hawk. 

 See No. 155. 



* For directions for measurement, see page 21. 



