CROWS, JAYS, MAGPIES, ETC. 269 



Distribution. — Colorado Desert, on both sides of the Colorado River 

 from the g-reat bend south to Gulf of California. 



474k. O. a. hoyti Bishop. Hoyt Hokned Lark. 



Like arcticola, but upper parts more rufescent. throat generally dis- 

 tinctly yellowish, and lores white. Male : wing- 4.(i*.)-4.r)4, tail 2.57-2.1)5. 



Distribution- — Breeds in British America; migrates to Nevada, Utah, 

 Kansas, and Michigan ; casually to Ohio and New York. 



4741. O. a. occidentalis (McCall). Montezuma Horned Lark. 



Like leiicolcema. but upper parts with a slight reddish tinge, leucolcema 

 being grayer. Male : wing 4.07-4.15, tail 2.t)o-2.95. 



Distribution. — In summer, central New Mexico, west to central Arizona ; 

 in winter, south to Sonora and Chihuahua, Mexico, and southeast to Texas. 



474in. O. a. insularis Toims. Island Horned Lark. 



Like strigdta, but darker, and less yellowish below. Male: wing 3.74- 

 3.9(), tail 2.;]()-2.67. 



Distribution. — The Santa Barbara Islands, California. 



FAMILY CORVIDiE: CROWS. JAYS. MAGPIES, ETC. 



key to genera. 



1. Wing long and pointed. 



2. Plumage black Corvus. p. 279. 



2'. Plumage mainly gray or blue. 



3. Plumage blue Cyanocephalus. p. 284. 



3. Plumage gray, black, and white Nucifraga, p. 282. 



1'. Wing short and rounded. 



2. Plumage black and white Pica, p. 209. 



2'. Plumage not black. 



3. Head crested Cyanocitta, p. 271. 



3'. Head not crested. 



4. Plumage mainly gray or blue. 



5. Plumage gray Perisoreus. p. 277. 



5'. Plumage blue Aphelocoma. p. 274. 



4'. Plumage mainly green and black . . . Xauthoura. p. 277. 



GENUS PICA. 



General Characters. — Tail nnicli longer than wing, graduate<l for lialf 

 its length or more, the feathers hecoming narrower towards tips ; uliig 

 short, rounded, primaries exceeding secondaries by much less than l»'ngth of 

 tarsus ; nostrils covered by bristles; orbits partly naked ; feet stout ; wings 

 and tail metallic. 



KKY to ."^I'ECIES. 



1. Bill and naked skin around eyes black. . . . hiidsonica. p. 270. 

 1'. Bill and naked skin aioiiiid eyes yellow .... lluttalll. p 271. 



