Under the agreement with the Russian Academy of Sciences' A.N. Severtsov Institute of Ecology and Evolution, the Tiger Special Inspection Federal State Institution has prepared a report on the accounting for the Amur tiger population and the collection of the animals' biological samples in the winter and spring of 2010-2011. This work was funded under the programme for monitoring the Amur tiger in the Russian Far East, which is supported by the Russian Geographical Society.

The report presents the results of a sample count of Amur tigers in the winter season of 2010-2011 conducted at 16 model sites located in the area of their habitat in the Primorye and Khabarovsk territories. This research is part of the Amur tiger monitoring programme, which Russian and American specialists have been carrying out for the past 14 years.

Based on the collected biological samples, during the period under review biologists registered 94 Amur tigers at all model sites, including 30 males, 33 females, 19 animals of undetermined gender and cubs, and 11 litters. In the report they have also analysed the problems arising during such studies and give recommendations on resolving them and improving the collection of data on Amur tigers and their prey -- hoofed animals, and also on changing the system of collecting data with a view to improving their analysis.