Turning 1936 Baker Creek 12 mi. north Ketchum, Blaine Co. Idaho Jan, 4, 1936. About 2 miles up Baker Creek we turned up a tributary to the north. The amount of snow on the ground increased to nearly four feet and was so loose that progress was painfully slow. The Marten traps were set several feet above the ground where a slanting log, leaning against the tree, met the tree. The bait was tied to the trunk of the tree about 18 inches above the trap, and usually consisted of a piece of Muskrat or Snowshoe Rabbit. No. 1 1/2 Victor trap was used. The situation was usually in the canyon bottom where a belt of trees crossed the valley and was bordered on each side by meadows. These crossings are used by Marten as lanes when traveling across the valley. The traps were set in dense thickets of trees to which Marten are supposed to be attracted, as these are locations in which squirrels and rabbits are most likely to be found. In the series of 15 traps only one Marten was caught. In the nine hours we were in the field the only birds seen were 3 flocks of Mountain Chickadees.