1908] Grinnell.—Biota of the San Bernardino Mountains. 75 
Myiarchus cinerascens cinerascens (Lawrence). 
Ash-throated Flycatcher. 
Several ash-throated flycatchers were seen in June in the scrub 
oak belt in the vicinity of Seven Oaks, 4800 to 5300 feet altitude, 
where they were doubtless breeding. The species was seen at 
the mouth of Mountain Home creek June 9, 1906; and one was 
taken on the mesa above the south fork of the Santa Ana, eleva- 
tion about 6400 feet, July 20, 1906. Full-grown juvenals were 
fairly common around the east end of Bear lake, August 2, 1905, 
feeding on the numerous insects that the west wind drifted across 
the lake. At Cushenbury springs, August 9 to 14, several of 
these flyecatchers made their appearance, evidently in migration. 
Five examples in all were obtained. 
Sayornis saya (Bonaparte). Say Phoebe. 
Say phoebes were not seen outside of the pinyon belt. At 
Doble, 7000 feet altitude, and around the north side of Baldwin 
lake, 6800 feet, they were seen every day during our stay there 
early in August, 1905. One was seen as far south as the cienaga 
at the north base of Sugarloaf, 7500 feet, August 18. 
The four specimens secured are all fully-grown juvenals, 
probably raised somewhere on the desert slope of the mountains. 
Sayornis nigricans (Swainson). Black Phoebe. 
The black phoebe appeared not to breed above the lower 
canons on the Pacific side of the mountains. <A pair were nesting 
at Skinner’s, near the confluence of Mountain Home and Mill 
ereeks, the second week in June in both 1905 and 1906. The nest 
was built under the north gable of the dining room. 
By the first week in July the species began to appear all along 
the upper Santa Ana. It was noted at Seven Oaks July 6 and 
later, at the mouth of the South Fork July 5, and at Big 
Meadows, 6800 feet altitude, the highest we saw the species, July 
4. By July 15, it was frequently seen about our South Fork 
camp. All that we were able to determine with certainty were 
juvenals. The rusty wing bars in this stage of plumage serve to 
show the age, if the observer is within, say, forty feet of the bird. 
