Smooth snake
Coronella austriaca
The smooth snake is a slender, non-venomous, and rather secretive snake often mistaken for a viper due to its markings. It prefers sunny, dry habitats such as heathlands, quarries, and forest edges, where it preys on lizards and small mammals. The species is completely harmless to humans and is known for its cryptic lifestyle. While widely distributed across Europe, it suffers from the loss of structurally diverse habitats.
Details
Identification
Smooth scales (not keeled), round pupils, dark stripe through the eye, heart- or horseshoe-shaped marking on the back of the head.
Social behavior
Solitary; interactions are limited to the mating season or communal hibernation sites.
Diet
Specialized predator of reptiles (lizards, slow worms), occasionally consumes small mammals.
Hunting strategy
Ambush predator; prey is constricted or held firmly by the body before being swallowed alive.
Spawning substrate
Ovoviviparous; females give birth to fully developed young encased in a thin egg membrane.
Overwintering
Hibernation in frost-proof burrows, rock crevices, or rodent tunnels from October to April.
Ecology
Ecological role
Important regulator of reptile populations and prey for higher-level predators.
Natural predators
Birds of prey, corvids, hedgehogs, martens, and larger snakes.
Competitor species
Adder (habitat) and Grass snake (food for juveniles).
Ecosystem service
Contributes to biological diversity and ecological balance in dry habitats.
Threats
Habitat loss due to natural succession, afforestation, intensive agriculture, and landscape fragmentation.
Scientific profile
Profile
Distinguishing features
Smooth scales, round pupil, dark eye stripe from the nostril through the eye to the corner of the mouth; head marking often interpreted as a 'crown' (genus name Coronella).
Habitat
Xerothermic, structurally diverse sites: heathlands, dry grasslands, quarries, railway embankments, forest edges, and vineyards with sufficient hiding places (deadwood, stone piles).