ii8 FiKLD Museum of Natural History — Zoology, Vol. IX. 

 PART 2. Upper mandible without notch or hook at tip. 



Bill, as illustrated; back, gray or 

 bluish gray ; bill, over .50 ; nostrils, con- 

 cealed by bristly tufts; tarsus, scutellate; 

 tail feathers, not stiff or pointed. 



Family SITTID^E. Nuthatches. 

 See page 267. 



Bill, as illustrated; back, bluish gray; bill, 

 less than .50; size, small; length, less than 

 5.50; first primary, very short. 



Family SYLVIID^. ■■-^ ^ -^ 

 Subfamily POLIOPTILINiE. Gnatcatchers. 



See page 270. 



Bill, as illustrated; throat, black ; nostrils, 

 concealed by tufts of bristly feathers. 



Family PARIDiE. Titmice, Chickadees. 



See page 268. 



Bill, as illustrated; back, brown or brown streaked; tail feathers, 

 not sharp pointed; outer tail feathers, shortest; tarsus, scutellate; 

 first primary, short. 



vimr 



Bill of Wren. 



Family TROGLODYTID^. Wrens. 



See page 262. 



