200 



WOODPECKERS 



those of its larger relative. In southern and western Texas many of 

 its nests are destroyed by the cloud-burst floods which annually 

 sweep the rivers there. 



ORDER PICI: WOODPECKERS, ETC. 

 FAMILY PICIDiE: WOODPECKERS. 



KEY TO GENERA. 



1. Outside hind toe longer than outside front toe. 



2. Toes 4, 2 pointing forward, 2 back. 



Fig. 262. 



3. Nasal groove extending only about half way to tip of 



bill 



Sphyrapicus, p. 210. 



Fig. 263. 



O- 



Fig. 264. 



1 3'. Nasal groove extending nearly to tip of bill. 



4. Plumage wholly black except for white head and 

 white patch on wings . . . Xeiiopicus, p. 207. 



4'. Plumage mainly white below and spotted with white 

 above Dryobates, p. 201. 



^ 2'. Toes 3, 2 pointing forward, 1 back . Picoides, p. 208. 



Fig. 265. 



r. Outside hind toe not longer than outside front toe. 



2. Head with con- 

 spicuous crest. 

 Ceophloeus, 



p. 213. 



2'. Head without 

 crest. 



3. Under surface of wing and tail yellow or red. 



Colaptes, p. 220. 



3'. Under surface of wing and tail not yellow or red ; upper 



mandible with a distinct lateral ridge and nasal groove. 



Melanerpes, p. 215. 



