California Reptiles & Amphibians

Masticophis flagellum piceus - Red Coachwhip (=Coluber flagellum piceus)



Click on a picture for a larger view





Range in California: Red

Click the map for a guide
to the other subspecies







Adult, Inyo County
Adult, Riverside County desert
Adult, Coastal Riverside County
Adult, Riverside County
Adult, San Bernardino County
Photos by Patrick H. Briggs, courtesy Tom Moisi


Underside of adult, Tehachapi mountins, Kern County © Todd Battey
Adult, San Diego County © Linda Morgan
Adult, Nye County, Nevada
 
Adult, Yuma County, Arizona
 
Adult eating a San Diego Alligator Lizard, Ventura County. © Samantha Zahringer.

Samantha Zahringer watched this coachwhip eat the lizard by her back door. Her kids saw the snake raise its neck, sway for a moment, then strike quickly. Two other lizards nearby froze while the snake swallowed. When the snake finished, the lizards finally moved away.
Though they are not solely snake-eaters, Coachwhips will eat whatever they can find and overpower, including snakes. Darrel Roberts found this coachwhip eating a young speckled rattlesnake in his driveway one morning in Pinal County, Arizona.
© Darrel Roberts
Two Red Coachwhips mating in late May in Orange County. © Mark Pugs
Adult, Kern County
© Brad Alexander
Habitat
Habitat, coastal Riverside County
Habitat, Inyo County
Habitat, Nye County,
Nevada at the CA Border
Habitat, San Bernardino County
Habitat, Riverside County desert
Habitat, San Diego County desert
 
Habitat, San Diego County desert riparian
Habitat, Kern County


 
Short Video
 
 

I saw this Red Coachwhip foraging in the desert in San Diego County before it saw me. After turning around in my direction, it became aware of me, raised its head off the ground in a state of alert, wiggled its neck back and forth while holding its head still, then turned around and raced away over the rocks into a bush.


Description
Nonvenomous
Considered harmless to humans.
Size
Adults of this species are 36 - 102 inches long (91 - 260 cm.) Hatchlings are about 13 inches long.
Appearance
A slender fast-moving snake with smooth scales, a large head and eyes, and a thin neck. Large scales above eyes. 17 scale rows at mid body. Coloration is variable; light brown, pink or reddish above with pink, brown, or black bands across the neck. Black and yellow phases of this subspecies are found outside of California. The dark coloring is interspersed with light coloring creating a banded or saddled appearance, with dark coloring surrounding the light scales. Color typically changes to a solid tan or reddish coloring along the length of the long thin tail. The braided appearance of scales on the tail (like a whip) gives this snake its common name.
Behavior
Active in the daytime. Hunts crawling with head the held high above the ground, occasionally moving it from side to side. The prey is overcome and crushed with the jaws or beneath loops of the body and eaten without constriction. Often strikes agressively when threatened or handled. Good climbers, able to climb bushes and trees. Seen moving quickly even on hot sunny days, but often seen basking on roads in early morning or resting underneath boards or other surface objects. Frequently run over by vehicles and found dead on the road, partly due to the tendency of this snake to stop and eat road-killed small animals.
Diet
Eats small mammals including bats, nestling and adult birds, bird eggs, lizards, snakes, amphibians, and carrion. Hatchlings and juveniles will eat large invertebrates.
Reproduction
Lays eggs in early summer. Eggs hatch in 45 - 70 days.
Range
Ranges throughout southern California from Ventura county to the Baja California border and north around the eastern side of the Sierra Nevada Mountains though the Great Basin desert into norhwestern Nevada, and south through nevada and much of Arizona to part of Sonora and Baja California. Apparently intergrades with M. f. rudocki in eastern Kem County.
Habitat
Inhabits open areas of desert, grassland, scrub, and sagebrush, including rocky, sandy, flat, and hilly ground. Avoids dense vegetation. Takes refuge in rodent burrows, under shaded vegetation, and under surface objects.
Taxonomic Notes
Five or six subspecies of Masticophis flagellum are recognized. Only two occur in California, including the San Joaquin Coachwhip - M. f. ruddocki (or three by those who recognize the Baja Coachwhip - Masticophis fuliginosus to be a subspecies of M. flagellum - M. f. fuliginosus.)
Conservation Issues  (Conservation Status)
None.

Taxonomy
Family Colubridae Colubrids
Genus Masticophis Whipsnakes, Striped Racers, and Coachwhips
Species flagellum Coachwhip
Subspecies

piceus Red Coachwhip
Original Description
Masticophis flagellum - (Shaw, 1802) - Gen. Zool., Vol. 3, p. 475
Masticophis flagellum piceus - (Cope, 1892) - Proc. U.S. Natl. Mus., Vol. 14, p. 625

from Original Description Citations for the Reptiles and Amphibians of North America © Ellin Beltz

Meaning of the Scientific Name
Masticophis - Greek - mastix - whip and ophis - snake - refers to the body shape and braided appearance of tail
flagellum
- Latin - whip - refers to the body shape and braided look of tail
piceus - Latin - pitch black - refers to the black morph of subspecies

from Scientific and Common Names of the Reptiles and Amphibians of North America - Explained © Ellin Beltz

Alternate Names
Red Racer
Coluber flagellum piceus - Red Coachwhip

Related or Similar California Snakes
M. f. ruddocki - San Joaquin Coachwhip
M. fuliginosus - Baja California Coachwhip
S. h. hexalepis - Desert Patch-nosed Snake
S. h. mojavensis - Mohave Patch-nosed Snake
S. h. virgultea - Coast Patch-nosed Snake

More Information and References
Natureserve Explorer

California Dept. of Fish and Game

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians. 3rd Edition. Houghton Mifflin Company, 2003.

Behler, John L., & F. Wayne King. The Audubon Society Field Guide to North American Reptiles and Amphibians. Alfred A. Knopf, 1992.

Bartlett, R. D. & Patricia P. Bartlett. Guide and Reference to the Snakes of Western North America (North of Mexico) and Hawaii. University Press of Florida, 2009.

Bartlett, R.D. , & Alan Tennant. Snakes of North America - Western Region. Gulf Publishing Co., 2000.

Brown, Philip R. A Field Guide to Snakes of California. Gulf Publishing Co., 1997.

Ernst, Carl H., Evelyn M. Ernst, & Robert M. Corker. Snakes of the United States and Canada. Smithsonian Institution Press, 2003.

Wright, Albert Hazen & Anna Allen Wright. Handbook of Snakes of the United States and Canada. Cornell University Press.

Brown, Philip R. A Field Guide to Snakes of California. Gulf Publishing Co., 1997.


Conservation Status

The following status listings come from the Special Animals List which is published several times each year by the California Department of Fish and Game.

This snake is not included on the Special Animals List, which indicates that there are no significant conservation concerns for it in California.


Organization
Status Listing
U.S. Endangered Species Act (ESA)
California Endangered Species Act (CESA)
California Department of Fish and Game
Bureau of Land Management
USDA Forest Service
Natureserve Global Conservation Status Ranks
World Conservation Union - IUCN Red List





 


Home | Lists | Maps | Photo Indexes | Sounds | Videos | Identification | More Info | Beyond CA | About Us | Usage | Taxonomy | New Stuff | Thanks | Disclaimers | Contact


Return to the Top

© 2000 - 2010