Koford 129 Cynomys ludovicianus June 1, 1955 Nr. Wellington, Colo. Visited Wellington preserve colony. 10:30 a.m., 30 mph N.W. wind, Hazy. (Q.-Do juios. feed more close to burrows than ads.? - age diff. in food habits). In area greatest concentration, where most feeding, an area of about 1 A., I counted 7 old + 17 juios. Litter of 5 juios. at burrow with Charlie "Charlie." Litter size: 5, 3, 3, 1, 2, 1 (lost 3 g.p.s. prob. scattered; not best possible count). Along- side dirt road just above st., groups 8 + 5 juios. at two wounds 5 yds. apart. (I lost 5 live hopes there. There took 2 old q.q. (#126, 127) and a tiny jiu, which I kept for pet, #127 in trap with jiu. There 4 & prob. mothers of litter seen.) In southern part preserve where population sparser, litter 1, 5, 2, 4/1 seen. One Cercion seen over adjacent area, hunting. No other hounds seen. Several old C.L. carcasses had been thrown out had been scattered 10 yds., but little eaten, mostly fly eaten + dried up - as for carnivores? Saw 1 Citellus 13-lineatus. Saw 3 Apictyo on colony, 4 in 2 buildings. Saw owl standing 4' from C.L. - no reactions seen. In area when Distichlis, Siva, thickly abandoned burrows 50% overg. with these species. Made overlay of horse pasture map to S., showing 13 C.L. seen, + locusts 4 litter (3, 3, 5, 5)." I heard that Joe Hopwood had found fox den (red?) near Spring Canyon Dam with C.L. parts scattered near. June 3, 1955. Half overcast, cumulus, 4 wind about 20 mph. Visited Spring Canyon Dam colony & saw 9 grown + 6 jui. C.L. Made overlay of map showing locations. No new juios. seen, 4 one litter not out. 1) At Dump colony I saw 6, 7 singles about 50 yds. apart, 4 two that ran to same burrow about 100 yds. short of S.E. end colony. All but 1 in line 300 yds. long, one 100 yds. to