Adder or Northern Viper (Vipera berus). Male head showing typical identification marking of inverted pale 'V' shape
Adder or Northern Viper (Vipera berus). Head of adult male. Showing diagnostic typical dark 'V' on the back of the head. Norfolk, England, Europe.
Size: 3561px × 5341px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No
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