164 
ON THE GEOLOGY AND NATURAL HISTORY 
Troglodytes Parkmanni, Aucl. 
Parkman’s Wren. Bail’d, General Report on Birds, p. 367. 
This small species we found to be very abundant throughout the Northwest. Thirteen 
specimens were obtained in our explorations. It seems to be peculiarly a Western species, 
ranging from the Rocky mountains to the Pacific. 
Sitta Canadensis, Linn. 
Red-bellied Nuthatch. Baird, General Report on Birds, p. 376. 
Quite rare in the Northwest. Seems to frequent for the most part, the wooded ravines 
of the Bad Lands, and along streams. We were able to secure but three specimens, from 
two localities, Cedar island on Missouri river, and Black hills. 
Polioptila caerulea, Sclat. 
Blue-gray Gnatcatciier. Baird, General Report on Birds, p. 380. 
We were able to obtain but one specimen of this species, and therefore suppose it to be 
quite rare. This was found near Bald island, Nebraska. It also occurs in Kansas near 
Fort Riley. 
Lophophanes bicolor, Bonap. 
Tufted Titmouse. Baird, General Report on Birds, p. 384. 
Must be very rare in the Northwest, inasmuch as but one specimen was secured by our 
party. It was not observed above St. Joseph on the Missouri. 
Parus septentrionalis, Harris. 
Long-tailed Chickadee. Baird, General Report on Birds, p. 389. 
Very abundant in the willow bottoms along streams throughout the Northwest. Four 
specimens were secured. 
Eremophila cornuta, Boie. 
Sky Lark. Baird, General Report on Birds, p. 403. 
Large numbers of this beautiful species are found throughout the prairie country of the 
Northwest. It seems to be gregarious, and to have a special fondness for the villages of 
the prairie dog, where they may be seen in large flocks. Twelve specimens are included 
in our collection. 
Carpodacus purpureus, Gray. 
Purple Finch. Baird, General Report on Birds, p. 412. 
Seems to be quite rare, as but one specimen was obtained by our party. The only lo¬ 
cality where we observed it was near the mouth of the Vermilion river on the Missouri, 
and I suspect that it does not occur on the Upper Missouri. 
