Adder or Northern Viper (Vipera berus). Male head showing typical identification marking of inverted pale 'V' shape

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Adder or Northern Viper (Vipera berus). Head of adult male. Showing diagnostic typical dark 'V' on the back of the head. Norfolk, England, Europe.

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Size: 3561px × 5341px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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