Pregnant common adder (Vipera berus) amongst pebbles. Female adders usually give birth between August and September. Litters range in size from 3 to 20 young,which are usually born encased in a transparent sac from which they must free themselves. However,sometimes they succeed in freeing themselves whilst still inside their mother | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gadsby, Brian |
Taille de l’image : | 5150 px × 3424 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |