Forest authorities in central India have successfully helped establish a new breeding population of the vulnerable hard-ground swamp deer, an animal previously restricted to just one protected area, reports contributor Sneha Mahale for Mongabay India.
Once widespread in India, the hard-ground swamp deer (Rucervus duvaucelii branderi) was until recently reduced to a single, isolated population of around 1,100 individuals, restricted to Kanha Tiger Reserve in central India’s Madhya Pradesh state.
The hard-ground swamp deer is the only subspecies of the swamp deer — or barasingha, meaning “12-horned” in Hindi — that’s adapted to solid grassland. The two other subspecies live in swampy grassland habitats in other parts of the country.
“Confining the entire subspecies to Kanha effectively created a single point of failure,” Neha Awasthi, a member of the Deer Specialist Group at the IUCN, the global wildlife conservation authority, told Mongabay India. She said small isolated populations face risks from fluctuations in population, gene patterns and inbreeding, as well as external threats including disease outbreaks or large-scale environmental disturbances.
To help the deer survive future catastrophes, the Madhya Pradesh forest department translocated 98 deer from Kanha to Satpura Tiger Reserve, also in Madhya Pradesh, between 2015 and 2023. The deer were first transferred into a 50-hectare (124-acre) predator-proof enclosure to allow for acclimatization, before being released into open grassland.
Awasthi is a co-author of a recently published study that found that the hard-ground swamp deer population had increased from the original 98 to 172 individuals by 2023. The researchers recorded fawns, including second- and third-generation deer, annually, suggesting they were successfully breeding.
“Several independent indicators suggest the population is establishing rather than simply persisting with management support,” Awasthi said.
During the monitoring period, the researchers also found that the swamp deer in Satpura were in good physical condition, comparable to that of deer in Kanha, suggesting that Satpura’s grasslands offered sufficient food, water and shelter for the subspecies.
The forest department actively managed much of the habitat inside Satpura to aid the swamp deer’s translocation, Awasthi said. These interventions included restoring grasslands and planting key forage species such as black speargrass, kangaroo grass and wild sugarcane. They also removed invasive plants such as lantana and congress weed.
Awasthi cautioned that the project’s long-term success will depend on continued management.
Since 2023, 48 hard-ground swamp deer have also been introduced to Bandhavgarh Tiger Reserve, also in Madhya Pradesh. That population has already grown to 64, according to Anish Andheria, president of the nonprofit Wildlife Conservation Trust, who wasn’t involved in the Satpura study.
“The swamp deer (barasingha) translocation programme in Madhya Pradesh is a landmark effort to secure the future of the species,” Andheria told Mongabay India.
Read the full story by Sneha Mahale here.
Banner image: Hard-ground swamp deer in their new habitat in Satpura Tiger Reserve. Image courtesy of L. Krishnamoorthy.