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An ethological study of the brush mouse, Peromyscus boylei.
The subject of this study, Peromyscus boylei (the brush mouse), is found from "Honduras northward to Oregon and Utah and eastward to the Ozark Mountains" (Hooper, 1968: 50). In California, it is found characteristically in the Upper Sonoran life zone and its range extends upward into the Transition zone and occasionally into the Canadian (Grinnel1, 1933). This saxicolous mouse inhabits "wooded or brushy slopes, especially in the vicinity of oaks and usually with reach of water" (Grinnell, 1933: 177).