KATHMANDU — Nepal’s ambitious efforts to establish a viable population of the vulnerable greater one-horned rhinoceros in western Nepal’s Bardiya National Park 40 years ago has been seen as a conservation success. The park, which didn’t have a surviving population until the 1980s, is now home to 38 individuals, as per recent census. But a new study shows that the translocated animals are wandering far outside their release zones in search of food and water, suggesting the habitat may not be healthy enough to keep them there. Researchers, who GPS collared five of the eight animals translocated from Chitwan in central Nepal in 2016-17, found that the larger home range of the reintroduced rhinos (Rhinoceros unicornis) in Babai Valley (one of the two habitats, the other one being the banks of Karnali River) of Bardiya National Park was primarily due to limited grassland, fragmented riverine forests and seasonal scarcity of water and forage. “Habitat degradation from floods further reduced suitability, forcing rhinos to range widely,” the study said. “Given the small population size and fragmented habitat, Babai Valley may not support a viable rhino population without significant habitat restoration, addition of individuals, or relocation to more suitable sites.” Greater one-horned rhinos in Chitwan, Nepal. Image by Aditya Pal via Wikimedia Commons (CC BY-SA 4.0). Once confined to Chitwan National Park — the heartland of Nepal’s rhino population — a smaller number of animals were relocated to Bardiya and Shuklaphanta national parks in the late 1980s to expand their range. But…This article was originally published on Mongabay