Bendire.] 128 [March 21, 



83. Contopus virens var. richardsonii CBaird). Western 

 Wood-pewee. 



A moderately common summer visitor, generally found about the 

 larger aspen groves near the summit of the neighboring mountains. 



84. Empidonax pusillus (Cabanis). Little Flycatcher* 



I saw a number of this species May 8, 1876, amongst the willows 

 on Rattlesnake Creek. 



85. Empidonax hammondi (Baird). Hammond's Fly- 

 catcher. 



A single specimen taken (perhaps E. obscurus) May 15, 1876. A 

 nest with three eggs taken June 29, 1875, belongs to probably one of 

 these two species. It was placed in a sagebush about two and one- 

 half feet from the ground, composed of dry grass, cottonwood down, 

 and lined with finer grass and feathers. Measurement of eggs .64 X 

 .51 of an inch. Color creamy white and unspotted. 



86. Ceryle alcyon (Boie). Belted Kingfisher. 



A rare summer visitor, a single pair only being known to breed on 

 Rattlesnake Creek, about a mile above the post. 



87. Chordeiles popetue var. henryi (Cassin). Western 

 Nighthawk. 



An exceedingly common summer resident, arriving about May 20 ; 

 and leaving early in October. In the evenings and on cloudy days, 

 I have seen hundreds flying about the meadows below the post in 

 search of insects. 



88. Antrostomus nuttalli (Cassin). Nuttall's Poor-will. 



A rare summer visitor. A pair or two breed in close proximity to 

 the post. I have heard its notes near the head of Bear Creek, near 

 the summit of the Blue Mountains. August 2, 1872, I took a set of 

 eggs of this bird near Tucson, A. T., on the barren plains south of 

 the camp ; the eggs lying on the bare ground close to the roots of a 

 mesquite tree. These were quite fresh, elliptical in shape, of a 

 rich cream color, and unspotted, and measured 1.06 X .81. 



89. Selasphorus rufus (Swainson). Rufous-backed Hum- 

 ming-bird. 



Rare, and only very few seen. 



90. Coccygus americanus (Bonap.). Yellow-billed Cuckoo. 

 August 2, 1876, camping under a clump of willow bushes near 



Keeney's Ferry, on the Oregon side of Snake River, I found a nest of 

 this species containing half grown young birds. The parents, at first 

 rather uneasy, soon lost their fears and attended to the wants of their 



