GROUSE, PARTRIDGES, QUAILS, ETC. 113 
5'. Tarsus divided into 
plates. 
Fig. 175. 
6 . Bill slightly hooked or notched at tip. 
7. Small; wing 1.90-2.20. 
8 . Upper parts greenish or grayish ; 
tail even. Vireonidae : 
... Vireos, p. 394. 
Fig. 176. Fig. 177. ’ P 
8 '. Upper parts bluish; tail gradu¬ 
ated Sylviidae : Kinglets, 
Gnatcatchers, etc. 
w . 1TC (Genus Polioptila: Gnat- 
lg ‘ ’ catchers ), p. 463. 
7'. Large : length 6.50 to 9. 
8 . Head crested . Ampelidae : 
Waxwings and 
Phainopeplas, p. 387. 
8 \ Head not crested. 
Troglodytidae : Wrens, 
3 Thrashers, etc. 
(Genus Oroscoptes: Sage 
Fig. 179. Thrashers , p. 433. 
6 '. Bill not hooked at tip. 
7. Tail feathers stiff, pointed at tip. 
Certhiidae : Creepers, p. 451. 
7 . Tail feathers normal (except Genus 
Chamcea , in which the first pri¬ 
mary is more than half as long as 
second). Paridae: 
Fig. 182. Fig. 183. Nuthatches and Tits, p. 452. 
ORDER GALLING: GALLINACEOUS BIRDS. 
(Families Tetraonid^:, Phasianidas, and Cracid^;.) 
FAMILY TETRAONIDiE: GROUSE, PARTRIDGES, 
QUAILS, ETC. 
KEY TO GENERA. 
1. Legs feathered down to base of toes. 
Fig. 184. 
2 . Tail feathers narrow and pointed. 
Centrocercus, p. 133. 
2'. Tail feathers broad and rounded. 
3. Sides of neck with tuft of feathers. 
Tympanuchus, p. 129. 
