Some Sierran Chipmunks 



409 



squirrel ( C alios per mo philus chrysodeirus) , not a chipmunk, 

 though extremely like one in appearance and actions. Besides 

 this rather pretentious ''book name/' he is variously known as 

 Yellowhead, Copperhead, or Bummer. This animal is in his 

 mode of life much like the ground-squirrel of the lowlands, 

 whereas the various species of Eutamias more nearly resemble 

 the tree-squirrels in habits and actions. The yellowhead is 

 rather a prosaic creature, prone to corpulence (not to say 

 greasiness), and with none of the pleasing airiness of his asso- 

 ciates. He is not unattractive, however, in his own more stolid 

 way, while the peculiarity of his markings is quite certain to 

 attract attention. The bright yellow head is a sure mark for 

 identification, while the rather large size (total length twelve 

 inches), heavy build, and short tail (about four and a half 

 inches) are additional features that are readily appreciable. A 

 yellowhead was a daily visitor to our camp at Bullfrog Lake, 

 becoming quite tame and confiding. We saw the animals here 

 in numbers, up to points at least as high as the limit of upright 

 timber, and they occur commonly from 9000 to 10,000 feet on 

 both sides of the divide at Kearsarge Pass. They were also 

 abundant at Horse Corral Meadow, but not seen at all in 

 Kings River Canon. 



On the east slope of the Sierra Nevada at this latitude there 

 are other species of chipmunks, more difficult to identify, but 

 the above three species, together with the yellowhead, are 

 characteristic of the western slope at the different levels sev- 

 erally occupied. 



NOTES ON PHOTOGRAPHY OF SMALL MAMMALS 



The average collection of vacation photographs contains 

 many landscape and camp scenes, with but few, if any, pic- 

 tures of live wild animals. This is due not so much to lack of 

 interest in the latter subject as to the many difficulties encoun- 

 tered in securing even fairly satisfactory results. 



The writer of these paragraphs, after considerable experi- 

 mentation, has been able to attain a certain degree of success 

 in the photography of small wild animals by the use of appa- 

 ratus such as can easily be included in the outfit of almost any 

 enthusiastic amateur, and by adopting methods that anyone 



