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Cabeza Prieta Natural History Association
Sonoran Desert Reptiles
Masticophis bilineatus (Sonoran whipsnake)



 Sonoran whipsnake

 Sonoran whipsnake

Diet: mammals, birds, bird and reptile eggs, lizards, snakes, carrion, insects
Size: 24" to 60" (60 to 150 cm)

Identification: 24 67 in. (61-170 cm). Olive, greenish, bluish gray, or light gray-brown above; lighter on rear two thirds of body. Paired pale spots on anterior corners of dorsal scales. Usually 2 or 3 light-colored stripes on each side, fading rapidly toward tail. Cream below becoming pale yellow toward tail. Dorsal scales smooth, usually in 17 rows at mid body. Wedged lower preocular between upper part of upper labial scales. Anal divided. Eats birds, small mammals, lizards, snakes and frogs.


Excerpts from A FIELD GUIDE TO WESTERN REPTILES AND AMPHIBIANS, 3/e by Robert C. Stebbins. Copyright (c) 2003 by Robert C. Stebbins. Reproduced by permission of Houghton Mifflin Company. All rights reserved.

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Natural History of the Sonoran Desert and Refuge