IVIaj-, 19 IJ 
vSOME XORTH-CEXTRAL COLORADO BIRD NOTES 
95 
Waklen, June 28, two egg's were found, and near our Hell Creek camp I Hushed 
a bird from a single egg. She was very anxious about it, and I was able to 
secure a number of excellent pictures of her ; this was July 3 and 4. Durand 
also found two eggs in another direction from the same camp. July 8 he found 
a single egg in the road or trail up which we had to drive to get to our Mt. Zirkel 
camp. July 17 we flushed the bird from the still unhatched egg. 
40. Aeronautes melanoleucus. White-throated Swift. There was a 
small colony about the West Pawnee Butte. Durand saw eight or ten. 
41. Selasphorus platycercus. Broad-tailed Hummingbird. First seen 
near Home P. O. At Chambers Lake it seemed rather common. It was fre- 
quently noted near our Mt. Zirkel camp, and was seen at Buffalo Pass and Steam- 
boat Springs. Durand often said he heard Hummingbirds at various of our 
camps and elsewhere, without seeing them, but while I have no doubt that he 
was correct, I do not quite like to list them on such evidence alone. As for 
myself, my hearing is not good enough to be of any use in such cases. 
Fig. 37. WESTERN NIGHTHAWK ON THE GROUND 
42. Tyrannus tyrannus. Kingbird. Seen rather frequently the first few 
days of the trip until near Simla, then at Cedar Point, and near Agate ; next 
May 31, south of Fort Morgan. It was common at the latter place. It was not 
noted again until we neared Ault, and thence was quite common to Fort Collins, 
and beyond nearly to Log Cabin. After that we saw no more until the last 
two days of our journey, when it was fairly abundant from eight miles west 
of Golden to Arvada. 
43. Tyrannus verticalis. Arkansas Kingbird. This species was observed 
at intervals from Elbert to Pawnee Buttes, where there was at least one pair 
hanging about our camp. I supposed they must have a nest in the creek bank 
scmew'here, but could not locate it. It was very common at our camp near 
Briggsdale, and between Ault and Fort Collins. I have no further record of the 
bird until we reached Steamboat Springs, where it was common, and frequently 
noted along the road from there to beyond Coulter. 
