For decades, Nepal's endangered rhino population has dwindled to near extinction. But recently, thanks in part to travel restrictions during the coronavirus pandemic, the population has soared. The nation's count of endangered one-horned rhinoceros has increased by more than 100 over the past six years. Officials are hailing the rise a conservation milestone." The rhino population across four national parks in the southern plains rose to 752 " up from 645 in 2015, according to the Department of National Parks and Wildlife Conservation. That's the highest it's been in decades. The area was once dominated by thousands of one-horned rhinos, but rampant poaching and habitat loss reduced their numbers. In the 1960s, there were only about 100 left. Nepal has conducted a rhino census every five years since 1994 in an effort to conserve the species after it was listed as vulnerable. That year, the Himalayan nation recorded 466 rhinos. Ever since, the government has stepped up its anti-poaching and conservation initiatives. But this year, the lack of tourists in the country left the habitats undisturbed, allowing for even more growth. "Due to the COVID-19 lockdown, the tourist pressure was reduced drastically that resulted in the undisturbed habitat of rhinos," [information officer Haribhadra] Acharya told CBS News. "In that scenario, the wildlife recovery might have taken momentum." Last month, hundreds of enumerators, soldiers and veterinarians worked for about three weeks to count this year's rhino population.