Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
J. Chatter
Perognathus parvus
8 mi. ENE Pasco, 650ft., Franklin Co., Wash.
July 22 - in 40 traps 15 feet apart caught
26 P. parvus and at locality
5 mi ENE Paseo, 500ft., Franklin Co., Wash.
canught 21 P. parvus in 50 traps
total of 47 mice in 90 traps
July 31 N.E. edge. Alkali lake 4200ft., Lake Co., Oregon
canught 1 ? specimen in 54 traps
at 20 feet apart in sandy soil
in Sagebrush and greasewood.
Little or no cheat grass present
which may be responsible for
low population of Perognathus.
17 Peromyscus maniculatus. 4 Dipodomys
ordii 2 Microdipodops megacephalus
were caught same evening.
Aug 1. 2 mi. E Vinton, 490ft., Plumas Co., Calif.
58 traps yielded only 1 P. parvus.
Sage brush & cheat grass plentiful.
- (Possibly altitude and not presence
of food plants determines population?)