Koford 15 Cynomys ludovicianus January 12, 1955 @ mi. N. Nunn, Weld Co., Colo., expedient. Several Aquila caria found there. January 13, 1955. Old burrows, or those of other rodents, may be enlarged & used by Lepus townsendi, judging from troth & droppings near low mounds & burrows. (I) I walked from Central Plains C.P.E.R. Range (C.P.E.R.) headquarters then sections 18+17 (R 65W) but saw no definite Cynomys sign. II Mr. Opps Range, who has ranch just N. of C.P.E.R., said one colony on his ranch remained last year but that there was another in section 33 (T 11N, R 65 W). I visited this. It was in a 4 section square pasture, there: [sketch: hills with colonys marked, road, and distances] Colony about 600 x 400 yds. Many old burrows. One showed recent work or use since last snow (Jan 5a.m.). Same on near level ground; most slopes about 5 to 4 prob. none over 10 %; Whole group N. SE side of low gentle ridge. About 3 miles to N. were bluffs & cliffs that should be good for hawk & eagle perches/ nests. I saw 1 Lepus townsendi on colony & shot it- it died in a burrow (old C. l. burrow?). This entire colony can be seen from hills near it. Good for study. Fairly good ground cover (buffalo grass mostly), not bare ground, & nothing over about 6" high. No shrubs. Good for study. Rocker to within about 200 yds. of road. Various sized & textured ground mixed in soil. /4.1 miles west of Pecos was a section (4) or 5 side road where many large mounds. This apparently