Childs 1959 Microtus oeconomus 21-29 June Pitmegea River, Cape Saline, Alaska Population are considerably higher than in 1958 Comparative figures for transects follow Aug 1958 may 1959 1 45 (4) 56 2 21 59 3 32 53 4 38 65 5 38 6 67 7 70 8 76 There is a great deal of winter activity to be seen. Many sedge marsh areas were completely mowed but now have 4-6" of growth. These areas of winter activity have few mice as there is no cover for them. This is true of T6 where eftonsir areas are not inhabited for the lack of old grass for cover. Runways are extensive and very well developed and beaten down an inch or more below the general surface where spongy material occurs. Winter nests are common and occasionally contain the remains of a mouse. As yet no sign of weasels or shrews & account for the above. Some areas show much digging with mounds of fresh dirt, resembling gopher