This video says about itself:
Siberian tigress Ilona captured on camera a year after release – Part II
28 May 2015
Raw footage taken by a camera trap inside Khingan Nature Reserve in Far East Russia that shows Ilona the Siberian tigress marking her territory. Ilona is one of five orphan tigers that IFAW helped rehabilitate and release back to the wild in May of 2014. A drop-off satellite collar fitted on Ilona provides scientists with critical data to better protect the species. There are less than 400 wild Siberian (aka Amur) tigers left in the wild. To find out more, visit: www.ifaw.org.
From Wildlife Extra:
12 month’s after release ‘Putin’s tigers’ are reported as thriving
Thanks to four camera traps IFAW had donated to the Khingan Nature Reserve, there is now footage of Ilona the tigress looking healthy and marking her territory.
Satellite tracking and camera trap videos show that the rehabilitated orphan tigress continues to thrive in the Russian forests near the Chinese border. By tracking her movements, scientists have learned that she is hunting wolves, deer and wild boar.
“Success stories like Ilona are helping to change the opinion and policy of officials in the Russian Ministry of Natural Resources,” said Maria Vorontsova, International Fund for Animal Welfare (IFAW) Russia director. “There was a general belief that it was impossible to rehabilitate and return orphan tiger cubs back to the wild. IFAW and our partner groups have now proven that it is indeed possible.”
Nicknamed “Putin’s tigers” after President Vladimir Putin’s participation in the release, all but one of the five tigers have successfully adapted to life in the wild. Kuzya, Ilona, Borya and Svetlaya have been tracked and are establishing territories of their own. Ustin was caught after months of wandering near human settlements along the Chinese-Russian border and was ultimately taken to the Rostov-on-Don zoo due to public safety concerns.
The tigress Zolushka (which means Cinderella in Russian) was released in 2013 and was the first to be successfully rehabilitated and reintroduced to the wild. Scientists report that she is doing well and continues to thrive in the Bastak Nature Reserve. It is believed that she found a mate, Zavetny, and may already have given birth to cubs. If the young survive, they will increase the remaining population of approximately 400 wild Amur tigers.