Roford 1955 80 Cynomyis ludovicianus March 26, 1955 Nr. Ft. Colling, Colo. Near (stolied after last storm). No troche at 18, 20, 12, 17, 25, 16, or any trap site to N. of fence! But much near burrow 5 yds. W. of #6 hole that was stolied after last storm. From it many troche to N. arts edge dry pond led for 15 yds. Xanthium burns apparently taken. Saw freshly opened. Some missing seed only (4 bram acusoot). Also from this hole troche to 2 burrows 15 yds. At, 4 on to 30 yds. more S W (one dug out at month samebet), 4 on 12 yds. to open cratn, 15 yds. more to fence, 4 on to Po+11 (this about 75 yds. air line from stolied one). Little sign of feeding dog troche, 5± sets thru fence. No troche in N 1/4 of colony (trapped out or wound?). No building of high mounds or digging new burrows. Main foods = Opuntia, Chrysos thamn; then Xanthium (nr. pond), Bucklæe (incl. stolna & pertilite floats), Ogquellia, & prob. Bouteloua gracilis. No green grass in colony yet. Some areas pure Bucklæe in sparse network stolbe & stolna, March 27,1955 NW Weld Co., Colo. Arrived 11:20 a.m. at Sec. 22 colony at (PER). Snow up to 1 ft. deep in drifts, 4 wind packed, but half ground snowmolars. Many C.L. out, includ- ing 3 at burrow just N of fence at W end colony. I defended snow troche part wooden stake at burrows with troche. Troche showed visit, to farther N. burrow (N of fence, W. of stolened), 4 55° from it for 30± yds. & where 3 C.L. seen. Then 5 yds. S. of fence, at W end colony, troche to Chrysethenum & Opuntia millings, one set to this area from burrow 45 yds. S. of it, 4 2 sets to last from 30 yds., nos to 5, 32°F. in shade, clean, light breezy, some softening. About 15 yds. S. of fence & W. stolened, group of 3 burrows used, 15±7 yds. apart. On N. side stolened on central low hill, a group of 4 burrows in snow with troche between trees. These spread over 50 yds. drain. Apparent Bucklæe stem born two years