Roford 305 Cynomys ludovicianus October 17, 1955 N. of Waverly, Larimer Co., distance of 100 yds. || At Sec. 23 colony, now move to E. of the gully, the same 100 yds. E. of it this summer. No recent grazing here. Some antelope tracker. Much washing down gentle slope by water - the burnow mowers seem to do not well this kind of washing. Very little recent digging for food! Only sites where much digging is in washer or near E. edge when little new-green Elea. Elea green + new, 2"-6" tall, over much of colony, this being eaten by me when I shot it. No sign of feeding on Atriplex or Eurybia recently, the three plants dominant over much of colony. Green Acan 4"-6" tall in very open stands over much of colony, but no signs of eating it. Sphaeroclea & Bahia green + underpruned but not abundant. One green Astragalus near. Chrysopodium leptophyllum long dry. Probably Salix's main food. At upslope edge of N. arm, erosion pavement of redpelt- bles covers most ground, but mounds there. One dug in shale, 50 round of shale fragments to 2"x2" size. At upslope edge N. arm, Bigs turf increases, but dominant only outside colony when slope steepens. Dabbling of very shot Bigs evident at periphery colony. Mully gather in much of colony, but vigor extremely poor, no evidence eating it. At some sites upslope part N. arm, 3 dogs gathered on one mound. Rather tame in N. arm, & I shot 6 there. Two (#175, 176) taken at upslope edge seemed to be large adults. Sly Sylvilagus apparently can dig a shallow burrow under Atriplex bush,