The grass snake is one of the most widespread snakes in Europe, ranging from southern Scandinavia and the UK in the north, through Central Europe, and eastward into Russia, the Caucasus, and Central Asia. It is also found in parts of North Africa and the Middle East. The species is closely associated with wetlands, lakes, and streams, but can also be found in gardens, open woodlands, and agricultural areas.
In Denmark, the grass snake is widely distributed but generally in decline. It is most common on the islands, especially Zealand, Lolland, and Falster, and is also found in parts of eastern Jutland and on Funen. However, it is rare in western Jutland and absent from many smaller islands. The grass snake is protected in Denmark and is listed as Vulnerable on the Danish Red List, mainly due to habitat loss and fragmentation.
The species is harmless to humans and easily recognized by its characteristic yellow or white collar behind the head.
On Djursland, the grass snake is primarily found in the eastern parts of the region, occurring in scattered locations where it has access to water and adequate cover. It is occasionally observed in areas such as Mols Bjerge, around Stubbe Lake, and near small ponds in heathland and forest environments. These habitats provide opportunities for hunting frogs, toads, and small fish, as well as sunlit spots for thermoregulation.
The grass snake is generally elusive, quickly fleeing when disturbed. However, sightings are most likely in early spring and during the summer months, when the snake may be seen basking near water. Many observations also come from garden ponds, field edges, and compost heaps—places that offer warmth and potential prey.
Although the species is less common on Djursland than in eastern Denmark, it still plays an important role in the local ecosystem, both as a predator and as prey for birds of prey and hedgehogs. To protect local populations, it is essential to maintain access to water and preserve undisturbed habitats with dense vegetation.
