The social scars of an orphan
The Elephant Transit Home (ETH) in Udawalawe, established in 1995 by Sri Lanka's Department of Wildlife Conservation, has a clear mission: rescue, rehabilitate, and release orphaned Asian elephants (Elephas maximus maximus). Unlike a permanent orphanage, the goal is to return these calves to the wild in Udawalawe National Park once they reach about five years of age. This process has created a unique, long-term natural experiment. By observing these released orphans, researchers have uncovered the subtle but lasting behavioral consequences of growing up without a mother.
Elephants have a social structure and complexity that rivals human societies. Calves normally learn important social rules by observing their mothers and other relatives. The Udawalawe Elephant Research Project, a long-term study initiated in 2005 by Dr. Shermin de Silva, tracks the behavior of individual elephants in the park. Research on similar orphaned populations in Africa reveals that motherless elephants have a harder social life. They often receive more aggression from others and have less access to mature, dominant elephants who act as repositories of knowledge. While orphans form compensatory bonds with their peers, these relationships do not fully replace the connection to a mother. This social disadvantage can affect access to resources and the transfer of essential knowledge.
From care to conservation science
The findings from Udawalawe and other long-term studies have direct implications for conservation. They show that successful rehabilitation requires providing food and safety. The complex social learning that occurs within a multi-generational herd is difficult to replicate, and its absence leaves a mark. For instance, studies of orphaned adolescent males in one African park showed unusually high levels of aggression, a behavior that was corrected only after the introduction of older, mature bulls to be role models.
At the ETH, keepers minimize human contact to prevent the elephants from becoming habituated, which is part of preparing them for a life in the wild. Before release, the calves are often smeared with a paste of dung and water to mask any human scent. Many are fitted with radio collars so that researchers can monitor their movements and social integration after they join the wild population. This ongoing research informs best practices for raising wild orphans, acknowledging that social health is as important as physical health for their long-term survival and successful reintegration into the wild.