GROUSE, PARTRIDGES, QUAILS, ETC. 



113 



Fig. 18'2. 



5'. Tarsus divided into 

 plates. 



Fig. 175. 

 6. Bill slig-htly Tiooked or notched at tip. 

 7. Small; wing- 1.U0-2.2U. 



Upper parts greenish or grayish ; 



tail even. Vireouidae : 



Viieos, p. 394. 



. Upper parts bluish ; tail gradu- 

 ated Sylviidae : Kinglets, 

 Gnatcatchers. etc. 



{Genus I'oh'optila : Gnat- 

 catchers), p. 403. 



Large : length 8 to 9. 



Troglodytidae: "Wrens, 

 Thrashers, etc. 

 {Genus Oroscojjtes : 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) Paridee : 



Nuthatches and Tits, p. 452. 



Fig. 183. 



ORDER GALLING : GALLINACEOUS BIRDS. 



(P\V.MILIKS TkTRAOXIIKE, PhASIANID.E. and CKAriI).K.) 



FAMILY TETRAONIDiE : GROUSE, PARTRIDGES, 

 QUAILS. ETC. 



KEV TO GKNKKA. 



1. Lesfs feathered down to base of toes. 



Tail feathers narrow and p<)iiit»'(l. 



Centrocercus, p. i: 



Fig. 184. 



' Tail feathers broad and romidi'd. 



3. 8ide3 of neck with tuft (if ft-athors. 



Tympanuchus, p. 129. 



