Roford 38 Cynomys ludovicianus Feb. 1, 1955 Custer, S. Dakota said abandoned ploughed ground seems to be preferred over native for burrows. Also line of old fence preferred (disturbed soil?). One preferred site was hardpan cortina flote. He knew of some in sandy bottom of Cheyenne River. In sand from mounds especially large. // Distant movement - colony started near Pringle, about 10 mi. from nearest town (in Wind Cave N.P.). Occasionally one seen out by self, perhaps in shallow temporary burrow. These always females (he thought pregnant). Bannen said. Largest forms over a section in size. Some Colony may start with a pair (as soon as he thought). Usually start in bottom with higher or wider drawn in time. They like buffalo glass ridger, he said (four or ridges in Colo.). // Prairie dogs very tame at Devil's Tower (one visit) but wild at Wind Cave. Bannen said never killed on road. Rattlesnakes sometimes lie in paths in grass. C.L. jump over. Snakes probably eat C.L. Usually snakes. Many snakes sometimes seen in C.L. burrow, dibernating (snakes go in in fall, Sept. ±). Main predator in eagle. B. never saw rattlesnake but saw where one caught; old timer. B. thought coyotes little effect because many coyotes in old days when many C.L. He said C.L. sometimes turn over rocks & set minute. He had also seen eat grasshoppers. B. said poison seldom gets all. After poisoned do not all gather on part town. Survivor very smart & hard to trap or poison in spite repeated parawings. B. had also used smoke leaves & exhaust fumes to kill C.L. Rarely are holes interconnected or shown by smoke. Brown fields in - wooded sanctuary, usually permanent burrow adjacent, shells