Scott on Birds observed at Twin Lakes, Colorado. 95 
of sage-brush bark, very compactly woven, and has no lichens whatever on 
the outside. Inside it is lined with grass. The eggs have the same general 
appearance as those of C. virens. 
39. Empidonax obscurus. Wright’s Flycatcher. — A single 
specimen obtained. 
40. Chordiles virginianus var. henryi. Western Nighth awk. 
— Abundant. Breeds. I took an egg July 3, fresh. The ground-color 
is whitish, thickly sprinkled all over with dark pink. Dimensions, 1.24 
x .86. I took two eggs, July 11, of an entirely different color, the 
ground-color being deep lead, thickly marked with spots of the same color, 
but much deeper. Dimensions, l.lOx.80, 1.12 x.79. The birds fly 
quite as much in the forenoon as at any time, and it was not unusual to 
see fifty flying low over the lake at a time. 
41. Selasphorus platycercus. Broad-tailed Humming-Bird. — 
Common. June 15 I took a male, evidently breeding, that lacked the 
crimson on the throat. 
42. Ceryle alcyon. Belted Kingfisher. — Met with but once. 
43. Picus pubescens var. gairdneri. Downy Woodpecker. — 
Not common. One taken June 20. 
44. Picus villosus var. harrisi. Hairy Woodpecker. — Rather 
common, but shy. July 111 took fully fledged young with red on top of 
the head. 
45. Picoides americanus var. dorsalis. Banded Woodpecker. 
— Not uncommon in localities. 
46. Sphyrapicus varius var. nuchalis. Nuchal Woodpecker. — 
Common. Breeds about June 5. Took young fully fledged the 15th of 
July. The nests are generally low, not more than ten feet from the 
ground. 
47. Sphyrapicus thyroideus. Brown-headed Woodpecker. — 
Not rare. Several pairs bred about the Lakes. The 23d of June I found 
a nest containing four young about two or three days old. The nest was 
in a “ quaking asp,” about ten feet from the ground. The entrance to the 
nest was very small, and the cavity inside not large. July 4, I took three. 
In nestlings nearly fully fledged the sexual difference was as plainly marked 
as in the adults. There were two males and two females in this nest. 
On July 111 found a second nest in a pine-tree about twelve feet from 
the ground. This contained four young females fully fledged. These 
birds do not seem shy, but are restless. 
48. Colaptes mexicanus. Red-shafted Flicker. — Common. 
Breeds about June 1. Took young fully fledged on July 2 and July 4. 
Seven in each nest. These nests, like those of most Woodpeckers I found 
in this region, were not more than ten feet from the ground. The birds 
are all typical, and show the distinguishing marks of sex in the first 
plumage. 
49. Bubo virginianus. Great-horned Owl. — Not common. Spe- 
cimens are much grayer than those taken in the East. 
