Mammals at Burns Pinon Ridge Reserve
The following are the mammals that I have documented on the Reserve. There are likely others that pass through the Reserve or are intermittent residents like badgers or skunks. Bats have been seen flying over the Reserve. It would not be surprising to find ten or more species, but they have not been documented. The domestic dogs that occasionally wander onto the Reserve is not listed, nor are the horses (and riders) that illegally trespass on occasion.
Desert Shrew Notiosorex crawfordi
Ground Squirrel Spermophilus
Antelope Ground Squirrel Ammospermophilus leucurus
Botta's Pocket Gopher Thomomys bottae
Desert Woodrat Noetoma lepida
Southern Grasshopper Mouse Onychomys torridus
Canon Mouse Peromyscus crinitus
Cactus Mouse Peromyscus eremicus
Pinon Mouse Peromyscus truei
Brush Mouse Peromsycus boylii
White-footed Deer Mouse Peromsycus maniculatus
San Diego Pocket
Little Pocket Mouse Perognathus longimembris
Desert Pocket Mouse Chaetodipus penicillatus
Merriam's Kangaroo Rat Dipodomys merriami
Mule Deer Odocoileus hemionus
Gray Fox Urocyon cinereoargenteus
Audubon's Cottontail Sylvilagus audubonii
Field Notes: With our classes, we generally run 100 Sherman live
traps in a 5 x 20 grid with each trap 10 m apart. The grid is permanent
and we have been trapping here for about 10 years. It is interesting that
both species of Neotoma are present at this location. Onychomys
seems to be found here only on good wet years; during drought years, this
species disappears. I have five species of Peromyscus listed.
The caveat is what a mammalogist once told me... "anyone who says he/she can
identify members of the genus Peromyscus is a liar." That
said, we generally field identify specimens using Jameson & Peeters (1988)
and go to Hall (1981) if we have skeletal material. We seem to catch
predominantly P. crinitus with some P. eremicus. The other
three are rare. Chaetodipus fallax is generally the numerically
dominant small rodent that we trap. We seem to be catching P.l.
longimembris, not P.l. bangsi, which is a listed species and found
lower down in the Palm Springs area. We have seen only one specimen of C.
penicillatus. The Gray Fox has been seen twice by students, once
boldly coming into camp and making off with a small tub of cream cheese!
Another listing of mammals is available on the Burns Reserve website.
Last edited: 06 May 2007