On ۳۱ July, “Umit” – which means hope in Kazakh – was released into a nature reserve on the edge of Lake Balkhash after more than a decade of careful planning to return the caspian tiger to the region. With this release, Kazakhstan became the first country to restore its tiger range after they had been thought extinct, with the last reliable sighting in the country recorded more than ۷۰ years ago.
Umit – a wild-caught female tiger transported from the Russian far east – will be joined by more big cats in the coming years, with plans to establish a self-sustaining population of about ۵۰. A wild-caught male flown from Russia is still being monitored by authorities and will be released when he is judged fit to survive alone. Two wild tiger cubs are also being reared on the reserve in special enclosures, with as little human contact as possible, and are likely to be released into the marshlands next year, to feast on boar, deer and kulans, a type of wild donkey.
“Today, we became witnesses of a truly historic event,” declared Yerlan Nysanbayev, Kazakhstan’s environment minister, after the release. “There is a lot of work ahead on monitoring tigers and forming a stable population, but today the first and very important step has been taken.”
The caspian tiger was considered extinct in the ۱۹۷۰s after decades of fur hunting, habitat destruction and eradication campaigns. Its range once spanned from eastern Turkey to north-west China, including Armenia, Azerbaijan, Iran and swathes of central Asia, mostly in forest highlands and along the edges of lakes and rivers, particularly in Tugai forests that were widely destroyed for agriculture.
It was officially declared extinct in ۲۰۰۳, but a scientific breakthrough just six years later laid the foundation for the recent release. DNA analysis of the tiger’s genetic history revealed that the caspian tiger and the amur tiger found in eastern Siberia were almost identical, with populations probably intermingling until the early ۱۹۰۰s before they were isolated by hunting. What became known as the caspian tiger spread west from Siberia and were separated from the amur tiger by a single letter of genetic code.
“For all intents and purposes, this is the return of the caspian tiger, only this time they flew instead of walking,” said Dale Miquelle, an authority on Siberian tigers who formerly headed the Wildlife Conservation Society’s Russia programme. “The idea of bringing back a subspecies of tigers that has disappeared is very exciting. This is as close as we’re going to get to that process.”
Today, it would be practically impossible for the caspian tiger to re-establish its former range. A ۲۰۱۷ feasibility study identified two places in the region with enough suitable habitat to re-establish populations, both in Kazakhstan. The most promising was thought to be Ile-Balkhash, where Umit was released, which the Kazakh government made a nature reserve in ۲۰۱۸.
While this summer’s release is the first example of a cross-border tiger translocation, there have been several successful releases in the Russian far east as part of efforts to restore the amur tiger’s former range. One scheme involved rescuing orphaned cubs whose mothers had been shot by hunters in Siberia, and then releasing them into former ranges when they were strong enough. The project, which Miquelle worked on, was a huge success – especially because there was no human contact with the young big cats.
“The success rate was pretty close to ۱۰۰% after the release. These animals adapt amazingly quickly. One young female killed a Himalayan black bear within ۲۴ hours of being released and others have learned to hunt on their own in the wild really quickly,” he says.
But it is not all good news. Wild tigers have suffered a catastrophic century, with numbers falling from about ۱۰۰,۰۰۰ at the beginning of the ۲۰th century to about ۵,۵۰۰ today. In many parts of Asia, they are still declining – and facing new threats from climate breakdown and disease. In recent years in Russia, African swine fever wiped out enormous numbers of wild boar, a tiger’s favourite prey, causing many to target human settlements. Ensuring there is enough food for the returning caspian tigers is key to their survival, says Miquelle.
“I am very hopeful this can work. In Russia, a number of translocations resulted in the recolonisation of tiger habitat. So there’s a blueprint that suggests that this can work as long as there is suitable habitat and sufficient prey,” he says.
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