Koford 33 Cynomys ludovicianus January 29, 1955 Weld Co., Colo. so little snow probably would blow readily. Colony on 5% slope of W. aspect, on both sides of draw-all irrigation ditch. (Belonged to Dr. Crum of veterinary school of Colo. A & M.). January 30, 1955 Nr. Ft. Collins, Colo. Half overcast but windless. Went to Spring Canyon Dam colony. I saw at 10:30 a.m., 13 prairie dogs out on area of 300 x 100 yds. Most N. of E-W fence. I set 5 live traps near 4 burrows when I saw C.b. All set by 10:40 a.m. I walked away from them. Wolf an hour later about 4 had come out 200 yds. E. of where I set traps. At 11:10, 2 out about 50 yds. W. of where I set traps (in W. gp. holes). 11:20, 3 out to W. of traps, 4 about 4 out N. of fence in E. group, 2 out S. of fence in E. group; none out close to traps. Traps were set by burrows. Way of there? - 20 come out other holes or stay in? Probably stay in - only 2 out in trap region at 11:45. 6 out (4 N. of fence) in E. group at 11:45 - so not all out yet. Overcast 9/10. Magpie constantly heard in tree 1/4 mile from C.b. burrows. A Sylviolagus seemed on a mound 100 yds. from the C.b. One dog frayed at edge of flat that is sometime windblown, all near edge of dry pond. || Departed. Returned 1:45 p.m. when sky all overcast, but calm, not cold. No C.b. in traps, but 14 seen out at once - S.W. gp. SEGP. hill (2) [illegible] low (3) [illegible] x x x x x x x x x x ↓ slope (2) (possibly 3) (7) East group dry West group lake obs. from road.