134 THE BIRDS OF EASTERN NORTH AMERICA. 
Part 2. Upper mandible without notch or hook at tip. 
1.) Bill, as illustrated; back, gray or bluish gray ; 
bill, over .503 nostrils, concealed by bristly tufts; tarsus, 
seutellate ; tail feathers, not stiff or pointed. 
Family PARIDA:. 
Subfamily SITTINA®. Nuthatches, 
See page 317. 
— (2.) Bill, as illustrated; back, bluish gray; bill, iess 
<* than .50; size, small; length, less than 5.50; first primary, 
very short. Family SYLVHDE. 
Subfamily POLIOPTILINAE. Gnatcatchers. 
See pag e 320. 
(3.) Bill, as illustrated; throat, black ; nostrils, concealed ¢ 
by tufts of bristly feathers. * 
Family PARIDAE. Chickadees, Titmice. 552 
See page 318. 
(4.) Bill, as illustrated; back, brown or brown streaked ; tail feathers, not sharp 
pointed ; outer tail feathers, shortest; tarsus, scutellate ; first primary, short. 
538 
Wren. Lill of Wren. 
Family TROGLODYTID. Wrens. 
See page 312. 
(5.) Bill, as illustrated; back, streaked ; tail 
feathers, stiffened and sharply pointed. 
Creeper. 
Family CERTHIIDAE. Creepers. 
See page 316. 
