Abstract
The homing ability of the western harvest mouse was investigated in a grassland area in Monterey County, California, during two summer seasons. Mice were removed from their home areas to release sites 320 to 1,000 feet away. Homing success diminished with distance displaced. Displaced mice returned quickly. Trapping at certain release stations revealed displaced mice and resident mice living side by side. Presumed homing of harvest mice in this study was accomplished only from short distances and probably through nonrandom movements over known terrain.

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