Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

THE adder (Vipera Berus) has her young about the end of August and the first week in September. The gestation period is 4½ months. It is unusual for a herpetologist to have a captured snake ...

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.

Resident photographed a common European adder on Sylt, the first confirmed record of the viper on a naturally snake-free island, study said.