| Long-eared chipmunks are striking, with sharp, bright markings and the longest ears of any chipmunk. They live at middle elevations (970-2,290 m) in the Sierra Nevada Mountains. They sometimes nest in trees in summer, but more often den in secluded places on or near the ground. In November, they begin a four-month hibernation, first by adding about 20 percent to their body weight. They eat the same wide variety of foods as most chipmunks, including seeds, fungi, flowers, berries, the pupae of butterflies, and other insects.
Also known as:
Sacramento Chipmunk, Four-banded Chipmunk
Females are slightly larger than males.
233 mm males; 239 mm females
230-239 mm males; 230-245 mm females
78.1 g males; 91.9 g females
74.1-89 g males; 81-107 g females
Gray, J.E., 1867. Synopsis of the species of burrowing squirrels (Tamias) in the British Museum, p. 435. Annals and Magazine of Natural History, series 3, 20:434-436.
Mammal Species of the World (opens in a new window).
Mammalian Species, American Society of Mammalogists' species account * (opens in a new window).
* PDF reader available here (opens in a new window).