Ramrod Ranch, Monterey, California 2014

Merriam's chipmunk's calls are distinctive. Perched on top of a stump or rock, the chipmunks vocalize long and vigorously, and the "chip" sound is often followed by a burst of sound called a "terminal pulse." These chipmunks are usually found below the timberline, at elevations of about 2,300-2,500 m. They nest in holes in the ground, under rocks, or in logs, and occasionally in holes in trees. When they are scampering in trees they jump from branch to branch, using their fluffy tails for balance. Where their range and the range of the California chipmunk overlap, the two may interbreed.

  • Sexual Dimorphism: None
  • Length
    • Average: 247 mm
    • Range: 240-255 mm
  • Weight
    • Average: 75 g
    • Range: 70-80 g


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