Snake Tracking Project Update
The end of 2025 corresponded with the conclusion of The Canberra Snake Tracking Project within the Ginninderry Conservation Corridor. Over the past four years, the Trust collaborated with Associate Professor Gavin Smith and PhD Candidate Hannah Gerke (ANU) to investigate the fates of Eastern Brown Snakes caught in urban areas and removed to nature reserves. While sometimes necessary to prevent harm to humans or the snake itself, moving an animal out of its familiar territory (called “translocation”) can be hugely disruptive. Translocated snakes often become disoriented, increase their movements, and are more likely to be killed by predators or hit by cars while they are exploring.
To understand and reduce the impacts of translocation, the Canberra Snake Tracking Project fit a total of 21 brown snakes with transmitters, which enabled us to compare the movements and survival of translocated snakes compared to resident snakes living in the Corridor. With the help of several dedicated community volunteers, we found that although translocated snakes move further on average compared to residents, individual snakes can respond extremely differently to translocation. For example, translocated snake Monty crossed multiple rivers and roads while going in circles, Kobe and Euan barely moved from their release sites, Theo was killed by a vehicle after leaving the Corridor, and Titan successfully returned home after travelling over 4 km in 100 days. Just like individual dogs or cats have different personalities, we found that individual snakes behaved differently from one another when put through our snake “personality” tests. Future work will test if differences in snake “personalities” relates to how well individuals survive and adapt to new environments after translocation.
We also found that life on the edge of urban areas is difficult, even for the resident snakes! Several of our residents previously had homes in areas that are now undergoing development, and some like Mac and Bandit risked returning to those areas despite being moved back to the Corridor multiple times. Despite their fearsome reputation, our experience tracking brown snakes highlights how shy and avoidant of people they actually are. Their lives depend on being able to flee to a safe refuge at a moment’s notice, and so their instinct to return to familiar places is strong. With so many big changes happening on the landscape, resident snakes may need some time to adjust and find new homes.
Written by Hannah Gerke