Nature Notes From Crater Lake - Volume 1, No. 2, August 1928
Crater Lake Institute online library - www.craterlakeinstitute.com
Entering a ranger's tent, a chipmunk examined various boxes, cans and corners. Finally he selected a spot near the center of the floor and began digging. In a minute or two he found what on closer examination proved to be a small fungus of the puff-ball type. After the chipmunk had left, a piece of chocolate cake was placed in the hole and carefully covered. Sometime later the chipmunk reappeared and after a more thoro examination of the tent and contents came back to the place where he had found the mushroom. He set to work, and in a moment the cake was found, duly examined and very, very impolitely if not indignantly kicked aside, and the excavating continued. After some effort and delays caused by the tunnel caving in, it appeared with another small mushroom which was greedily eaten.
A few days later a young chipmunk was noticed carefully searching the road after each car had passed the registering station. After some dozen or more cars had registered and passed on, something was found and hastily carried to a vantage point and the meal was begun. It was interrupted by two more chipmunks after the same tidbit, tho after some maneuvering they were discouraged allowing the observer to get a good view of the object in question which proved to be a humming bird. It no doubt had been cooked to a turn by the heat of the radiator of the car with which it had in some manner come into contact.