1913] Grinnell-Swarth: Birds and Mammals of San Jacinto 213 



the hillsides. Immediately about the cabin there were small 

 areas of grass and flower-covered meadows. The majority of 

 the birds and mammals collected here were of Upper Sonoran 

 species, the Transition species, though but a short distance away, 

 seldom straying down this far. 



This camp was occupied from June 16 to 30. 



Filler's Mill 



This station, about midway between Schain's Ranch and 

 Strawberry Valley, was at the same elevation as the latter point, 

 6000 feet, and well within the Transition Zone. Fuller's Mill. 

 on the western slope of the range, lies in a huge amphitheater, 

 surrounded by high ridges except on the southwest. The streams 

 all drain into the north fork of the San Jacinto River. 



The region is, in its general characteristics, much like Straw- 

 berry Valley, being fairly level and grown up with open woods, 

 with little underbrush. The forest trees are largely yellow 

 pine, white fir, incense cedar, Coulter pine, and black and golden 

 oaks. 



It was at this point that the party ascending this section of 

 the mountains first encountered such Transition species as the 

 white-headed woodpecker, mountain chickadee, slender-billed 

 nuthatch, Audubon warbler, and others found commonly from 

 this altitude upward. Camp was maintained here from June 30 

 to July 5. 



Round Valley 



This little valley, the highest point at which a camp was 

 established. 9000 feet, lies at the east base of San Jacinto Peak, 

 the streams draining eastward down the exceedingly steep slopes 

 above Palm Springs. It is timbered chiefly with lodgepole pine, 

 though there is a good deal of fir and Jeffrey pine on the dry, 

 rocky ridges to the northward, while the higher surrounding 

 slopes are clothed with chinquapin, manzanita, and buckthorn. 

 The center of the valley is occupied by a small cienaga, a few 

 acres of grassy marsh bordered by veratrum patches and willow 

 thickets. 



