European adder (Vipera berus) 2 adult males, 1 black form, and female, Suffolk, England, April
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Photo credit: © paul sawer / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: adder, adders, adult, animal, berus, black, britain, british, england, english, europe, european, female, male, nature, reptile, reptiles, snake, snakes, vipera, wildlife