. Animal life in the Yosemite; an account of the mammals, birds, reptiles, and amphibians in a cross-section of the Sierra Nevada. Zoology. WEASELS 87 in hollow logs or trees. Furthermore, the weasel is an adept climber and can run up or down the trunks of the smaller trees as readily almost as a tree squirrel. By reason of its structure and capabilities, it is therefore able to prey upon a much larger variety of animals than any other species of Fig. 9. (a) Sierra Least Weasel; Vogelsang Lake, August 31, 1915. See p. 89. (ft) Mountain Weasel; Ten Lakes, October 8, 1915. See p. 86.
. Animal life in the Yosemite; an account of the mammals, birds, reptiles, and amphibians in a cross-section of the Sierra Nevada. Zoology. WEASELS 87 in hollow logs or trees. Furthermore, the weasel is an adept climber and can run up or down the trunks of the smaller trees as readily almost as a tree squirrel. By reason of its structure and capabilities, it is therefore able to prey upon a much larger variety of animals than any other species of Fig. 9. (a) Sierra Least Weasel; Vogelsang Lake, August 31, 1915. See p. 89. (ft) Mountain Weasel; Ten Lakes, October 8, 1915. See p. 86. (c) Pacific Mink; Merced Lake, August 23, 1915. See p. 89. All photographed from freshly taken animals; reproduced about % natural size. The body coloration of the weasel is unique among our predatory mammals. It changes abruptly with the seasons, being solidly white in the winter months and brown and yellow in the summer season. The weasel is thus able to hunt the year round, well concealed in its protective color- ation be the season that of blanketing snow or of brown logs on the bare ground. In the summer months we found weasels at practically all of our camps in the territory from the 4000-foot contour up to the head of Lyell Canon, at 9800 feet altitude. In Yosemite Valley, in both the winter and summer months, weasels are observed commonly. On December 20, 1914, a 'white'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Grinnell, Joseph, 1877-1939; Storer, Tracy Irwin, 1889- joint author. Berkeley, Calif. , University of California Press
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Keywords: ., bookauthorgr, bookcentury1900, bookdecade1920, booksubjectzoology
