1908] Grinnell—Biota of the San Bernardino Mountains. 57 
August, when the large coveys of young began to make their 
increased numbers noticeable. 
No other species of quail were encountered by us anywhere 
in the region under consideration. 
Zenaidura macroura carolinensis (Linneus). Mourning Dove. 
Mourning doves were abundant about Bear lake, east through 
Bear valley, and about Baldwin lake and Doble. At the latter 
locality they were constantly visiting the few springs, as usual in 
pairs, both adult and full-grown young. They were also abundant 
on the desert at Cushenbury springs, to which they kept coming 
for water. August 11, 1905, I found a nest of this species on the 
bare desert two miles west of that point. It was located on the 
eround, between and partially shaded by two small bushes not 
over a foot high. It was composed of a scanty collection of fine 
round weed stems which barely separated the newly hatched 
squabs from the hot ground. The distracted parent tumbled 
from the nest and lit on a tree yucca near by. 
In the higher mountains doves were either wanting or very 
searee. Several were seen along the upper Santa Ana, some as 
high as 6500 feet, on the south side of Sugarloaf. But none were 
observed above the lower Transition zone. 
Cathartes aura septentrionalis (Wied). Turkey Vulture. 
The turkey vulture does not venture into the highest moun- 
tains, although cattle are grazed onto the uppermost meadows, 
and we saw several carcasses which ordinarily prove sufficiently 
attractive to the vultures. One turkey buzzard was seen circling 
over the meadow at Bluff lake, 7500 feet. The species was com- 
mon around Bear lake, and a number were seen around the 
slaughter pens at Knight’s ranch, about one mile south of Bald- 
win lake; several were noted at Doble. 
None were seen above Transition and the species seems most 
at home below even that zone. 
Accipiter cooperi mexicanus (Swainson). Cooper Hawk. 
The Cooper hawk was the bird of prey most frequently met 
with in the region, extending its range up through the Transition 
zone. It was common along the Santa Ana, and two nests were 
