GEOLOGICAL SURVEY OF THE TERRITORIES. 

 ZonofricMa leiicopJirys, Sw., (wliite-crowned sparrow :) 



681 



Hah. — United States from Atlantic to the Kocky Mountains, where 

 they become mixed up with Z. gamhelli Greenhiud, Keinhardt. 



Madison River was the first place on our route where we met with 

 this finch. There they were quite abundant, as they were at Lewis's 

 Lake, where I obtained a fine specimen in winter plumage. Here they 

 were very shy, and it was with great difiiculty that I secured a single 

 specimen. We also found them in considerable numbers along Snake 

 Elver. 



Zonotrichia gambelii, Gambel, (Gambel's finch :) 



Hal). — Eockv Mountains to the Pacific coast. 



We met with a few flocks of these birds at Yellowstone Lake, and at 

 Fort Hall, where I obtained one specimen, No. 300, (G2299.) This spe- 

 cies is almost exactly like the preceding, Z. leucophrys^ the only notice- 

 able difl:ereuce being in the black stripe on the side of the crown, which, 

 in leuco2)hrys, passes down over the upper half of the lores and in front 

 of the eye, sending back a short branch to it, which cuts off the white 

 superciliary stripe. In Z. gamhelii the superciliary stripe passes continu- 

 ously forward to the lores, cutting oft" the black from the eye. In habits 

 it resembles the white-crowned finch just described. 



Junco orcgonus, Sclater., (pink-sided snow-bird :) 



Hah. — Pacific coast of the United States to the eastern side of the 

 Rocky Mountains ; stragglers as far east as Fort Leavenworth in winter 

 and Great Bend of Missouri. 



