According to the latest census data (2011) released by the Uganda Wildlife Authority (UWA), the total world population of mountain gorillas has risen to 880. A total of 400 mountain gorillas (2006: 340) have been confirmed to be living in the Bwindi Impenetrable National Park in Uganda and 480 were counted in the Virunga Massif area, which spans parts of Democratic Republic of the Congo, Uganda and Rwanda, in 2010.
Mountain gorillas live in social groups and the census results indicate that the 400 mountain gorillas in the Bwindi Impenetrable National Park form 36 distinct social groups and 16 solitary males. Ten of these social groups are habituated to human presence for either tourism or research.
To celebrate Uganda's 50th Independence anniversary the management of the Uganda Wildlife Authority (UWA) has launched a Gorilla tracking promotion. Visitors wishing to track gorillas within the months of November 2012, April 2013 and May 2013 will pay US$350 (foreign non residents), US$300 (foreign residents) or Ush 150,000 (East Africans) for a permit. Payment for all gorilla permits under the promotional rates shall only be done at the Reservations office at UWA Headquarters in Kampala only. For more details visit UWA's website.