404 University of California Publications in Zoology, [^ol. 7 



1 the species was in full song. In Big Creek Canon a grosbeak 

 and fox sparrow were heard singing simultaneously in the same 

 tree. 



The first individual was seen at the head of Big Creek (8000 

 feet) on July 1. Eidgway (1877, p. 488) did not find the species 

 ranging to this altitude. A couple of days later one was heard 

 singing in an aspen, and after this a few grosbeaks were ordi- 

 narily to be found in the higher parts of the mountains. Prob- 

 ably a partial vertical migration took place about this time, as 

 the weather was becoming much warmer. 



A youngster begging for food was seen at Big Creek Ranch 

 on July 27. 



Passerina amoena (Say) 

 Lazuli Bunting 



Occurred generally along the route followed by the expe- 

 dition, from Quinn River Crossing to Alder and Leonard Creek 

 ranches, and to a height of 8000 feet in the mountains. Found 

 characteristically in Upper Sonoran and lower Transition zones. 



The lazuli bunting was a bird of the mountain stream asso- 

 ciation of plants, being observed in quaking aspens, wild rose 

 and gooseberry thickets, willows, and in alders. 



In certain localities they became very numerous. On July 

 7, at an altitude of 6000 feet on Big Creek, twenty or more 

 individuals were observed.. In general the buntings were most 

 common from 5000 to 7000 feet altitude. 



At Quinn River Crossing lazuli buntings were observed both 

 in the sagebrush of the desert and in the willows along the river. 

 In no case were they seen far from streams. After June 1 the 

 birds were in full song. One brightly plumaged male observed 

 was shyer and more secretive than its more modestly clothed 

 mate, which is, in my experience, contrary to all precedent. 

 Upon my appearance the male dodged back into a thicket, though 

 the female remained in plain view. 



Males were commonly observed along streams, perching for 

 a few moments on some topmost swaying wiUow branch. After 

 voicing a roundelay of song, a flight would be made down stream 

 for some distance, and the vocal performance would be repeated. 

 Sometimes they sing while flying through the air. 



