1908] Grinnell—Biota of the San Bernardino Mountains. mnie 
Myiochanes richardsonii richardsonii (Swainson). 
Western Wood Pewee. 
This was a common species along the whole length of the 
Santa Ana. It ranged on the Pacifie side of the mountains from 
Upper Sonoran well into the Boreal zone. A nest was seen near 
the upper power house in the lower Santa Ana canon, June 12, 
1905, and many others were noted between Seven Oaks and Big 
Meadows during June of each of the three years. Full sets of 
eges consisted invariably of three. At Dry lake, 9000 feet al- 
titude, the species was common, and on June 22, 1905, a nest was 
logated twelve feet above the ground on a horizontal dead branch 
of a limber pine. A bird was sitting, but was not disturbed. 
The notes of the wood pewee were to be heard before there was 
a trace of light early in the morning, and with the exception of 
owls and nighthawks this was the last bird to be heard at night. 
Wood pewees were common at Bluff lake as late as September 
1, though then very quiet. The species was common around Bear 
lake the first of August, and one individual was seen on the north 
slope of Sugarloaf August 21. One migrant in juvenal plumage 
was taken at Cushenbury springs August 12,1905. Otherwise we 
failed to find the wood pewee anywhere on the desert side of the 
mountains. Ten skins of this species were obtained. 
Empidonax difficilis Baird. Western Flycatcher. 
In the breeding season the western flycatcher seemed to be 
altogether limited to the lower canons of the Pacific slope of the 
mountains. An interesting association was that of the western 
flyeatcher with the big-cone spruce. For the former was never 
seen during June more than a hundred yards from the latter. 
The two evidently require similar conditions of shade and moist- 
ure at about the line of mergence between Upper Sonoran and 
Transition. 
In Mountain Home ecafion at about 5000 feet elevation, June 
23, 1906, I found a nest of the western flycatcher with four partly 
incubated eggs. This was six feet above the ground, supported 
against a dead alder trunk by an out-turned flake of bark, a very 
common site for the nest of this species in other parts of Cali- 
fornia. The nest was close to the stream, and also near a trail, 
