Common adder on leaf litter.
Male European adders are usually silvery-gray in color, and thinner than the females.
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Vipera berus
Male European adders are usually silvery-gray in color, and thinner than the females.
Females of the species tend towards being more earthy-colored.
Melanistic (dark-colored) adders exist too.
Black adders occasionally appear, they're usually female.
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