66 



EXPLORATIONS AND SURVEYS WEST OF IOOTH MERIDIAN. 



themselves, but on the appearance of a raven or hawk, all would unite 

 and make a combined aud always successful attack upon the intruder. 



54. Sayornis sayus (Bon.) Say's Flycatcher. 



A specimen taken the 9th. Rather uncommon, 

 to those of the eastern Pewee (fmcus). 



Habits very similar 



55. Contophus virens (L.), var. richardsonii, Sw. Western Wood-Pewee. 

 Not seen till the loth, when it was not common. 



No. 



95 

 276 



56. Empidonax minimus, Bd. Least Flycatcher. 



Made its appearance the 12th. Apparently not common. 



57. Empidonax obscurus (Sw.) Wright's Flycatcher. 



First seen the 17th. Afterward rather common, keeping among the 

 low trees and bushes. 



