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An eastern chipmunk eating. Chipmunks have an omnivorous diet primarily consisting of seeds, nuts and other fruits, and buds. They also commonly eat grass, shoots, and many other forms of plant matter, as well as fungi, insects and other arthropods, small frogs, worms, and bird eggs. Around humans, chipmunks can eat cultivated grains and vegetables, and other plants from farms and gardens, so they are sometimes considered pests.
Common name: Eastern Chipmunk. (Information for this Species Page was compiled in part by Andrea Boysel for Biology 220M, Spring 2001 at Penn State New Kensington) Chipmunks are eight to ten inches long and weigh two and a half to four ounces. Males are slightly bigger than females.