Koford 109 Cynomys ludovicianus May 19, 1955. Larimer Co., Colo. Dyke Dist. str. just N. of Typha (see map). 0 of the 14, one seen HE (w/2) on E.H. in field in NW NE 1/4 of HE. This we went across fence to grass in green Distichlis. At least 3 also grazed in green Distichlis in eastern 1/2 of mapped area. One in N. center of FE was adult & nipple parturient, chest mottled. Spreytto moved about erratically but 3-2 lunnuers had two at once (#6 & #8 E. Center G-D seen much before). Made overlay map of those seen out 3:45 p.m. At 4:10 I shot adult & (111) big lunnuer #8 as it fed among Kochia scoparia (green 4 day) on last year's grain field. // Perusal area showed much Distichlis green, 2-3" long, + much Sida spinulosa, some Agropyron smithii Dunne (?), & some other forbs. Those feeding in Distichlis hidden in grass in side view. Not very their growth, however. // Twice I saw a 7' marsh hawk fly low (15-20' high) over prairie dogs. They stopped feeding & soon ran a short distance, but resumed feeding quickly after hawk passed. Daw 1 Lepus californicus on this colony area May 11, 1955 Arrived at Wellington have postern colony 10 a.m. Clear, wind 25 mph. I saw max. of 12 at once on colony of 4 acres. Daw 1 Cottus 13-1/2 in., small Spreytto, a few mod- or larvae, 2 moppers, a ground in area. At austine 5 C.L. in Dist- ichlis in GA in area east of Typha. These feeding apparently. I saw one in Kochia & stibbile 20 yds. S. of fenced area. It ran finally to lunnuer at fence line (on S. side of ED). Same (?) then ran an into Distichlis in NW 1/4 of FC. Another from NE of it ran 20 yards straight into the edge of Typha where dry cottails 1½' high but in open stand, soil damp & coated with salts. Not all for another fed in Kochia & Salsola Basya.