RIDGWAY ORNITHOLOGICAL CLUB. 45 



The whistle made during his descent was quite low and the 

 buzzing sound miide as he passed the other bird, a young T. costce, 

 was coarser than I had heretofore thought. It also lacked all whistl- 

 ing character. I also noticed another swooping back and forth, 

 but heard no whistle or other vocal sound. 



There is still another hummer-note — that of the chase. They 

 are very fond of chasing one another, sometimes for sport, of ten for 

 spite. This note also resembles the feeding note, but is louder and 

 possesses a chippering character, sometimes almost like the sound 

 produced by lightly and rapidly smacking the lips together. I can 

 detect but little difference between the sexes and it appears much 

 the same whether the chase is in sport or in anger. Furthermore, it 

 is often made by the pursued as well as the pursuer. At such times 

 I am always reminded of a lot of school-boys playing tag. 



If a hummer is perched and a person passes near they start off, 

 uttering a note similar to that made while feeding, but, should it be 

 a 9 which you have frightened from her nest she will go off 

 silently. 



Several, both old and young, were taken at San Bernardino, 

 and at Bear Valley a number of young were observed. These 

 last had most probably migrated here from below. 



39. Troc^iilus rufus Hmel. {Rufous Hummingbird). 

 Common during the migrations. Do not breed so far south as San 

 Bernardino. 



40. Trociiilus alleni (Hensh.). [Alleti's Huinmiyigbird). 

 The same remarks apply to this as to the preceding. 



41. Trochilus calliope Gould. [Calliope Humming- 

 bird). Not uncommon. They were most numerous in Bear Val- 

 ley, where I took three adult 5, two young $ and three young $, in 

 three days. I was unabe to find any adult $ of this species. The 

 adult S till stay around the mouths of the canons in Bear Valley, 

 not seeming to ascend them. 



42. Tyrannus verticalis Say. [Arkansas Kingbird). 

 Common everywhere but at Yuma. Took young on the Mojave 

 river June 29th. 



43. Myiarchus cinerascens Lawr. [Ash-throated Fly- 

 catcher). Only two noted. San Bernardino, April 37th, and Bear 

 Valley, June 30th. 



44. Sayornis nigricans (Swains.). [Black Phoebe). A 

 common bird in nearly all localities. None noted at Yuma, al- 

 though they undoubtedly occur there. 



