80 University of California Publications in Zoology. [VoL 
was rather with surprise that I found out the others, one after 
another. 
The gray flycatcher does a good deal of its foraging about 
the tall conifers. I have followed individuals many minutes, 
which stayed far above gunshot range in the lofty pines. Then 
again I found them in the willow thickets of the caion bottoms, 
and at the edges of cienagas. This was especially true after the 
young were out, these repairing to the thickets rather than to the 
open woods. 
As to nesting time, the latter half of June seemed to be the 
most favored time for fresh eges. But a nest was found June 15 
(1905) with three newly-hatched young; and another with four 
heavily incubated eggs the same day; while on July 14 (1906) I 
found a nest of four eggs in which ineubation was moderately 
advanced. Altitude and zone may make a little difference; for 
the earliest eggs and young were found at 6000 to 7000 feet 
altitude, while around Dry lake, June 14 and 15 (1906), six 
nests were found all in process of construction. In the matter 
of nesting sites there was much variation. I found ,two nests 
within ten feet of the water; but the majority were on canon 
sides, or mountain sides (the same thing’), in some eases fully a 
mile from water in an air line. Out of twenty-two nests of 
which I have record in my field note-book, three were in willow, 
three in cottonwood, five in black oak, three in incense cedar, 
four in tamarack pine, one in fir, one in buekthorn, one in man- 
zanita, and one in mountain mahogany. The average height 
above the ground of twenty-two nests was 714 feet. The high- 
est, In an incense cedar, was forty feet, and the two lowest, one 
in a chinquapin and the other in a small cedar, was two feet. 
Some nests were saddled on horizontal limbs of as much as two 
inches diameter, or into large upright crotches; others were built 
among diverging upright twigs, or on the side of the main stem, 
supported by small outstanding branches. The latter was the 
case usually in young cedars. 
In shape the nests were all deeply cupped. The inside meas- 
urements in several eases averaged 1.80 inches across by 1.60 
inches in depth. While the size of the nest cavity remains prac- 
tically constant, the outside dimensions of the nests varied great- 
