1908] Grinnell—Biota of the San Bernardino Mountains. 87 
age. It can be readily distinguished from juvenals of both 
Icterus bullocki and Icterus cucullatus nelsoni of corresponding 
age, by its larger size and much darker coloration. The lower 
surface is dusky olive green, acquiring a gamboge yellow tint 
abdominally. And the back, wings, and tail are deeper toned 
than in either of the other species. 
Icterus cucullatus nelsoni Ridgway. Arizona Hooded Oriole. 
The Arizona hooded oriole was nearly as common as the Bul- 
lock oriole in the lower Santa Ana canon. But it was met with 
nowhere else during our entire trip. In the locality mentioned 
several nests were noted June 11 and 12, 1905. The greatest 
elevation at which this Lower Sonoran species was seen was about 
4000 feet on the brushy mountain side above the mouth of Bear 
ereek. Here an adult male was seen by the roadside, June 12. 
No orioles of any kind were seen on our return down the Santa 
Ana canon, September 4, by which date they had evidently de- 
parted. 
Two specimens were taken. 
Icterus bullocki (Swainson). Bullock Oriole. 
We found Bullock orioles common in the Santa Ana canon 
below the 3500-foot contour level, June 11 and 12, 1905. Sevy- 
eral nests were seen in sycamores. One examined was twenty 
feet above the ground nicely hidden in a mistletoe clump. This, 
on June 12, contained three newly hatched young and two eggs. 
The species was again seen in the same ecafion at the mouth of 
Foresee creek (below Seven Oaks), 4800 feet, July 13; and two 
males in full song were noted in the willows about the group of 
tent-houses at Seven Oaks, 5100 feet, June 14, 1907. But we 
found this Upper Sonoran species nowhere higher until the 
migratory movements began. Several immature birds were seen 
around Bear lake, August 1 and 2, 1905. We found Bullock 
orioles numerous on the desert side of the mountains, at Cushen- 
bury springs, 4000 feet, August 9 to 14, and at Cactus Flat, 6000 
feet, August 14 to 17. About our camp at the north base of 
Sugarloaf (7500 feet) several were seen in the willow clumps 
each day from August 18 to 21. Finally, the last one for the 
