LookalikesCopperhead vs Common Watersnake

Copperhead vs Common Watersnake

Hourglasses or saddles - which snake is at the creek?

Copperhead
Copperhead
Agkistrodon contortrix
Common Watersnake
Common Watersnake
Nerodia sipedon

The quick tell

Both are banded and brownish, but the bands run opposite ways. Copperhead bands are narrow over the spine and wide on the sides (hourglasses). Common Watersnake bands are wide over the spine and narrow on the sides (saddles). A banded snake actively hunting in the water is nearly always the watersnake.

Field marks, side by side

CopperheadCommon Watersnake
BandsNarrow on top, wide on the sides - hourglass shapesWide on top, narrow on the sides - saddle shapes
ColorPinkish tan with chestnut bands; pattern stays crisp for lifeGray-brown; darkens with age until bands almost disappear
HeadCoppery and triangular, plainSlimmer; often a dark bar behind the eye
WhereDry ground: leaf litter, rock piles, wood edgesIn or beside water - banks, snags, and shorelines

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Common questions

Was the banded snake swimming in my pond a Copperhead?

Probably not. Copperheads can swim but rarely hunt in water. A banded brown snake cruising a pond edge or basking on a snag is almost always a Common Watersnake - check for bands that are widest over the spine, the reverse of a Copperhead.

Are Common Watersnakes venomous?

No. They are pugnacious and will strike and release musk if grabbed, but they have no venom. They are one of the most frequently misidentified - and needlessly killed - snakes in North America.

More snakes people mix up

Copperhead vs Eastern Rat SnakeCottonmouth vs Common WatersnakeEastern Coral Snake vs Scarlet KingsnakeCommon Garter Snake vs Western Ribbonsnake