162' Wyoming Experiment Station. 



464. Empidonax difficilis Baird. 

 Western Flycatcher. 

 Summer resident ; but the records will not warrant an 

 expression as to its range or abundance. Dr. Jesurun has 

 three skins in his collection that were taken near Douglas on 

 the following dates: 1 specimen, Sept. 13, 1894; 2 specimens 

 May 29, 1895. I have never seen this species alive in the 

 state. It is very strange that no collector except Dr. Jesurun 

 has observed and taken this flycatcher. 



466. Empidonax traillii (Aud.). 



Traill's Flycatcher. 

 Probably a summer resident ; but data are quite limited 

 and very little is known of this species in the state. Merriam 

 found this bird in the Yellowstone park in 1872 ; Bond has 

 taken three specimens at Cheyenne ; Aiken has reported this 

 species near Sherman. There are no skins in the University 

 collection. 



467. Empidonax minimus Baird. 



Least Flycatcher. 



Summer resident ; but there is very little data as to its 

 distribution and abundance. Drexel took a specimen of this 

 species at Fort Bridger, 1858; Jesurun reports them rather 

 common at Douglas ; Bond finds them common at Cheyenne ; 

 Cary reports them as common breeders in the choke-cherry 

 thickets in the canons near Newcastle and that he took an in- 

 complete set of eggs (2 eggs) in that section on June 15, 

 1900. From the evidence in hand they appear to be partial 

 to the lower elevations of the state. 



468. Empidonax hammondi (Xan'Tus.). 



Hammond's Flycatcher. 



Summer resident ; but little is known of its occurrence. 

 Coues reports one specimen taken at Pacific Springs ; Allen 

 reports this species from Fort Steele ; Jesurun has taken one at 

 Douglas. There are three Wvoming skins in the Smithsonian 



