124 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



but no tufts of hair-like feathers over nostrils. Usually observed 

 in small flocks on the ground in open places. 



Family MOTACILLID^E. Wagtails, Pipits, Titlarks, etc. 



See page 261. 



* 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 talons; head, not bare. 



Family FALCONID^. Hawks, Falcons, Eagles, etc. 



See page 143. 



Eyes, surrounded by radiated disk of feathers; plumage, soft; 

 bill, hooked; toes, armed with talons. 



Family STRIGID^. Horned Owls, Hoot Owls. 



See page 155. 



'For directions for measurement, see page 21. 



