Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Alcorn
1937
Thompson bottae canus
7
Aug 4
1937
5 mrs Fallow, 1,000 ft, Churchill County, Nevada
Total Tail Foot Sex Depth Total Old Less Week Mounds Mounds Length Lateral Length Tacked Tunnel Ovary Outside Night Distance Mounds Caught
8 1/2 2 3/4 1 1/4 ♀ 13" 3 2 20" 20" Normal 26' 1st
8 7/8 2 3/4 1 1/4 ♂ 6" 14 11 15" 15" NORMAL 42' 5 min. Far
Aug 5
One female weasel caught in gopher trap measured 13 3/8 4 7/8 1 1/2 1/2.
Dec. 1
On Dec. 1, 1937 I made some experiments on poisoned bait for Pocket gophers. I took sweet potatoes and cut six baits 3 1/2 in. long and 1/2 in. square making an oblong piece of sweet potatoe. In making them so long and big I planned on having them too large for the gophers to carry and they would then have to eat them or cut them at the place the bait was put into the tunnel thus killing the gopher at that point. I placed three of these baits into a group of about Ten (10) mounds at four o'clock in the afternoon. The following afternoon, I examined all three baits and found no trace of two of them and one was untouched. I started digging and after following the tunnel for some distance across an alfalfa field at a depth of about six or eight inches came the way. It came to a high piece of sandy soil. Digging descended to a depth of some 3 1/2 feet. In the tunnel a male gopher was found dead. Following the tunnel three feet farther a newly constructed nest was found made of cut pieces of dry grass. In this nest several small pieces of alfalfa roots were found and one piece of the sweet potatoe. What happened to the other piece of potatoe I do not know. However, this gopher had 3 1/2 inch piece of bait (covered with strychnine)