1912] Taylor: Birds and Reptiles of Northern Nevada. 409 



an altitude of 7000 feet on Big Creek. 



Habits. — All that is necessary, as a rule, to attract the vireos 

 is to remain motionless and make an unusual squeaking sound 

 with the lips. One bird was observed with a large insect in its 

 mouth. On July 15, at 6000 feet altitude on Alder Creek, a 

 couple of young ones were heard teasing a parent for food, so 

 there is very little doubt of the breeding of the species in this 

 region. 



Vermivora celata orestera Oberholser 

 Oberholser Lutescent Warbler 



Distribution. — Observed at several localities in the higher 

 portions of the mountains; head of Big Creek (8000 feet). Alder 

 Creek (7000 feet), and Duffer Peak Meadow (8400 feet). Evi- 

 dently the lutescent warbler was limited to Transition. It was 

 nowhere seen in numbers. 



Habits. — The large patches of low, tangled quaking aspens on 

 the higher slopes of the mountains seemed to be the favorite 

 habitat of the lutescent. In the course of the summer's work 

 we saiv very few indeed, but occasionally heard the characteristic 

 trilled call-note. This song made itself most evident in the morn- 

 ing, but once, at least, it was noted in the early afternoon. 



Ordinarily the birds are very shy and their movements diffi- 

 cult to follow. In the gnarled aspen thickets they kept well 

 within the shelter of the tangle, or where the trees were higher 

 they remained in their topmost leafy foliage. In either case 

 they were hard to locate. Two individuals observed perched on 

 dead limbs of limber pines. The bird at times exhibits an 

 extreme nervousness of movement, while at others it remains 

 quietly perched on a single twig for several minutes. 



A number of juvenals were seen in company with some 

 chickadees in a willow patch near Duffer Peak. The greater 

 shyness of the warbler was immediately apparent. 



Dendroica aestiva brewsteri Grinnell 

 California Yellow Warbler 

 Distribution.— Noted at practically all stations below 6500 

 feet altitude. A single juvenal was taken at the Duffer Peak 



