CROWS, JAYS, MAGPIES, ETC. 
269 
Distribution. — Colorado Desert, on both sides of the Colorado River 
from the great bend south to Gulf of California. 
474k. O. a. hoyti Bishop. Hoyt Horned Lark. 
Like arcticola , but upper parts more rufescent, throat generally dis¬ 
tinctly yellowish, and lores white. Male : wing 4.09-4.54, tail 2.57-2.95. 
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 leucolcema, but upper parts with a slight reddish tinge, leucoloema 
being grayer. Male: wing 4.07-4.15, tail 2.63-2.95. 
Distribution. — In summer, central New Mexico, west to central Arizona ; 
in winter, south to Sonora and Chihuahua, Mexico, and southeast to Texas. 
474m. O. a. insular is Towns. Island Horned Lark. 
Like strigata, but darker, and less yellowish below. Male: wing 3.74- 
3.96, tail 2.36-2.67. 
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. 269. 
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 . . . Xanthoura, p. 277. 
GENUS PICA. 
General Characters. — Tail much longer than wing, graduated for half 
its length or more, the feathers becoming narrower towards tips ; wing 
short, rounded, primaries exceeding secondaries by much less than length of 
tarsus ; nostrils covered by bristles; orbits partly naked ; feet stout ; wings 
and tail metallic. 
KEY TO SPECIES. 
1. Bill and naked skin around eyes black. . . . hudsonica, p. 270. 
1'. Bill and naked skin around eyes yellow .... liuttalli, p. 271. 
