GREEN TREE SNAKE

The Green Tree Snake

The green tree snake is a fascinating and agile resident of Australia’s diverse landscapes. This slender, non-venomous serpent is renowned for its vibrant appearance and its gentle place in the ecosystem.

Appearance and Identification

The green tree snake is typically slim with a long, graceful body, growing up to 1.2 metres in length, though some individuals may reach 1.8 metres. Its striking colours can vary, usually displaying shades of bright green, olive, or blue-green along the back, complemented by a creamy yellow underside. When frightened, some green tree snakes may reveal striking blue skin between their scales, a dramatic but harmless display.

Habitat and Distribution

These snakes are found along the eastern and northern coasts of Australia, including Queensland, New South Wales, the Northern Territory, and parts of Western Australia. They prefer habitats such as:

• Forests and woodlands
• Rainforests and mangroves
• Urban gardens and parks

Green tree snakes are expert climbers and are commonly seen gliding through the lower branches of trees, shrubs, and even across water in search of food or shelter.

Behaviour and Diet

Known for their curiosity and speed, green tree snakes are primarily diurnal, meaning they are most active during the day. Their diet consists mainly of:

• Small frogs and amphibians
• Reptiles, including skinks and geckos
• Occasionally small fish or insects

These snakes use agility and quick reflexes to catch prey, relying more on stealth and surprise than on constriction or venom.

Reproduction

During the breeding season, which typically occurs from spring to early summer, females lay clutches of 5–16 eggs in sheltered locations, such as under logs or within leaf litter. The hatchlings, once emerged, are independent from the start, each venturing out into the world alone.

Role in the Ecosystem

Green tree snakes play a vital role in controlling populations of frogs, small reptiles, and insects, helping to keep Australian ecosystems in balance. Their presence is a sign of a healthy habitat, and their non-aggressive nature means they pose no threat to humans.

Interaction with Humans

Despite their vivid appearance, green tree snakes are harmless to people. When threatened, they may puff up their bodies, display their blue colouring, and emit a musky odour, but these are defensive behaviours rather than signs of aggression. If encountered, the best approach is to observe from a respectful distance and allow the snake to go on its way.

Conservation Message

While not considered endangered, green tree snakes are affected by habitat loss and the impacts of domestic animals. Protecting green spaces and practising responsible pet ownership helps ensure these beautiful snakes continue to thrive in the wild.

The green tree snake is a reminder of Australia’s remarkable biodiversity—elegant, harmless, and indispensable to the environment. With respect and understanding, we can all play a part in safeguarding their future.