KEY TO FAMILIES. LAND BIROS. 



139 



Bill, slender; first primary, riot short, the first, second and third, being about equal in 

 length ; hind toe and claw, longer than middle toe and claw ; hind toe nail, long, in this 

 somewhat resembling larks, but no tufts of hair-like feathers over nostrils. 



to 



530 



Family MOTAC1LLID/E. Pipits, Titlarks, etc. 



See page 311. 



GROUP 4. 



Birds having wings from 3.25 to 9.50 inches long.* 

 Section 1 . Bill, with strong hook ; toes, armed with talons. 



Eyes, not surrounded by radial disk of feathers; as in the Owls; toes, armed with talon ; ; 

 head, not bare. Family FALCONID/E. Hawks, Falcons, Kites, etc. 



See page 162. 



Eyes, surrounded by radiated disk of feathers; plumage, soft; bill, hooked; toes, armed 

 with talons. 



Family BUBONID/C. Hoot Owls, Horned Owls. 



See page 186. 



* For directions for measurement, see page viii. 



