Koford 19 Cynomis ludovicianus January 19, 1955 Rockport, Weld Co., Colo., told me of someone (friend?) seeing prairie dog running down road for from colony. He thought 10 or 2 may have came into his ranch last year from colony about 1/4 mile to N. (on Aear's place). / Visited C. C. Aear, old-timer living in shack 1 mi. N. of Rockport. He had about 40 A. colony near his shed; another 10 A. over hilltops to W. Some burrows across fence on property to S. He had poisoned most of colony last year (strychnine or oats) except for near house. Burrows looked unused by C. L., but many Sylvilagus of leporis towards N. / I found definite C. L. droppings on burrow 1/4 mile S. house (1954 use?). Still saw snow on ground & I searched for tracks. One group of 6 burrows NW of canal 100 yds., on 50-5° E. slope, were connected by tracks, & I saw one long one out on burrow, fleeting tail after. He went in when I approached to 150 yds. No call heard. Temp. about 35°F. (estimated) & cold breeze; partial cirrus overcast. Aear thought they hibernated. He liked cottontail & C. L. near house. (Most people I have talked to would like to see a few around). / The tracks showed that C. L. writes small spots when snow melts away from ground - only very short dry grass (1/4") or plant stubs available. (Aear did not mind topping or shaking away from burrow.). // At John Lawrence place near (S W of) C.P.E.R., I looked at colony on gentle slope, some flat, 1/4 mile NW of his house, between canals & creek bottom. Holes rather far apart, I thought. Little ground cover. This