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Tennessee's Watchable Wildlife

Tennessee's Watchable Wildlife






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REPTILES » SNAKES
Copperhead

Copperhead VENOMOUS
Agkistrodon contortrix

One of 4 venomous snakes in Tennessee; this pit viper occurs across the entire state. Two subspecies are found in Tennessee: Southern Copperhead (A. c. contortrix), which occurs in extreme West Tennessee, and Northern Copperhead (A. c. mokasen), which occurs across the rest of the state. The subspecies interbreed along a broad zone where the ranges meet.

Description: A medium-sized, heavy-bodied snake (24.0 to 36.0 inches in length) with a large, triangular-shaped coppery-red head and vertical pupils. Distinctive dark brown “hourglass” crossbands are wide on sides and narrow at the center of the back. Body color is variable, but is usually light brown or gray. Belly is usually gray to pink with darker blotches. Facial pits occur on each side of head between eye and nostril and a little below. Scales are keeled. Southern Copperheads are paler and pinker than the Northern subspecies. Males are larger than females. Young resemble adults, but have bright yellow tails.

Similar Species:

  • Milksnakes have wide dark blotches at center of back.
  • Juvenile Cottonmouths have a broad, dark band through the eye and body color is mostly dark brown.
  • Eastern Hog-nosed Snake has up-turned snout, and hisses and flattens head when approached.

Habitat: Generally prefers forested habitat and avoids open areas such as pastures and agricultural fields. Often found on rocky, wooded hillsides with abundant logs, leaf litter, or rocks for cover. Copperheads can also be found in urban and suburban environments, as well as near wetland and stream edges.

Diet: Largely mice, but also small birds, lizards, snakes, amphibians, and insects (especially cicadas).

Breeding information: Adults court and mate in spring and fall. Males locate females by scent and often fight other males in a vertical combat, in which front third of their body becomes airborne and entangled. Copperheads, like other vipers, produce relatively few young. Females give live birth to 1-21 (average 7) young in late summer or early fall.

Status in Tennessee: Locally abundant except for central and western Tennessee. Populations are vulnerable to being killed by humans and road mortality.

Fun Facts:

  • Juvenile Copperheads wiggle the bright yellow tip of their tail to lure prey within striking distance, a behavior known as caudal luring.
  • Fortunately, Copperhead venom is not very potent so fatalities from bites are extremely rare.

Best places to see in Tennessee: Rocky, forested hillsides of the western Highland Rim or mountains in eastern Tennessee.

For more information:

Atlas of the Reptiles of Tennessee

The Snakes of Tennessee web site

Sources:

Conant, R. and Collins, J. 1998. Peterson Field Guides: Reptiles and Amphibians (Eastern/Central North America). Houghton Mifflin Company, New York. 616pp.

Jensen, J. B., Camp C. D., Gibbons, W., and Elliot, M. J. 2008. Amphibians and Reptiles of Georgia, University of Georgia Press, Athens, GA. 575pp.



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