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tinction we have, although not absolute, as Dr. Strong, Dr. Swift and I 
once heard a bird that sang both songs. In examining skins at the museum 
there were specimens labeled western that had yellow on the cheeks, as 
noted by me on the field. The smaller, grayer lark was identified as the 
Rio Grande. Perhaps it was the Southern (argutula) of Ridgway, who 
does not mention the Rio Grande. 
COURTESY OF FISH AND WILDLIFE SERVICE 
Bison in the Refuge 
Only one species of junco was seen, presumably the Shufeldt’s, a sub- 
species of the Oregon, and it was common in the feeding tray. There was 
no question of the deeper black of the head and bib, definitely marked off 
from the brown back. All these birds fed with the wings slightly drooped 
so I could not see the pink flank if there was one. The iris was black. No 
slate-colored juncos were seen. The brown of the back was somewhat on 
the bronze tint, almost like the Tennessee warbler or the rough-winged 
swallow. A whole series of wrens were there. A Carolina built a nest in 
a clothes pin basket; the canyon wren was identified by his descending 
chromatic scale song; Bewick’s was seen and heard several times; and we 
may have seen the rock wren. I was not sure whether some of them had 
white or buff tail markings; and the house wren was also around. 
The sparrows gave much trouble. Vespers and western lark sparrows 
were everywhere along the roads, the lark sparrows singing. There was 
one sparrow looking much like the Lincoln’s without the buffy band that 
permitted careful study sitting out in the open. I don’t know what he was. 
The savannah was generally grayer and the yellow of the supraorbital line 
was scant or lacking. The rock sparrow was finally discovered by his 
singing, and then several of them were seen. This is a new bird on my 
