Ngorongoro Conservation Area
The blue wildebeest has also been rated as of least concern. The population trend is stable, and their numbers are estimated to be around 1,500,000 – mainly due to the increase of the populations in Serengeti National Park (Tanzania) to 1,300,000. However, the numbers of one of the subspecies, the eastern white-bearded wildebeest ("C. t. albojubatus") have seen a steep decline. Population density ranges from 0.15/km2. in Hwange and Etosha National Parks to 35/km2 in Ngorongoro Conservation Area and Serengeti National Park.