[Photographs]Source: Journal of Animal Ecology, Vol. 12, No. 2 (Nov., 1943)Published by: British Ecological SocietyStable URL: http://www.jstor.org/stable/1378 .

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Journal of Animal Ecology Vol. I2, Plate ii

Photo C. Elton

Photo.i Pasture country, with blue (evergreen) oaks, in the Upper Sonoran Zone, Sierra Nevada. Habitat of ground squirrels (Citellus beecheyi), kangaroo rats (Dipodomys), pocket gophers (Thomomys), Californian quail (Lophortyx californica) ,and rattlesnakes (Crotalusvi ridis). The quail roost in the oaks.

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Photo C. Elton

Photo. 2. Ground squirrel (Citellus beecheyi) having a dust bath. Note pasture with cow dung; and turkey mullein (Eremocarpus). This species of squirrel carries plague in some other parts of California. Face page 21i5

(Acknowledgement is made to the Staff of the San Joaquin Experimental Station, for the opportunity of taking these photographs.)

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