THE GROUND SQUIRRELS OF CALIFORNIA.
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| (a) Oregon Ground Squirrel in meadow near Klamath Falls, Oregon. Photographed by H. C. Bryant, May 30, 1914. Note uniform coloration with no indication of a reddish brown patch on back. | (b) Female Belding Ground Squirrel at entrance to burrow; Tuolumne Meadows, Yosemite National Park. Photographed by T. I. Storer, July 27, 1915. Note patch on back rendered photographically nearly black, but which was reddish brown. Compare with a. |
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| (c) Same squirrel as shown in b standing upright in characteristic "picket-pin" attitude. | (d) Sierra Golden-mantled Ground Squirrel or "bummer," feeding on scraps from the camp table. Note the distended cheek. Bullfrog Lake, 10,600 feet, Fresno County. Photographed by J. Dixon, September 1, 1916. |
Fig. 20.
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