Bwabwata National Park ("Diospyros mespiliformis") and makalani palm ("Hyphaene petersiana"). Several rare large mammal and bird species are found in Bwabwata. Elephants regularly move between Namibia, Angola, Botswana and Zambia. Other species found are Cape buffalo, hippopotamus, roan antelope, sable antelope, tsessebe, zebra, wildebeest, common reedbuck, red lechwe, sitatunga and crocodile. Main predators are lion, leopard, cheetah and spotted hyena. The Mahango Area and Kavango River in western Bwabwata are listed as an internationally Important Bird Area supporting globally threatened species and is an avian diversity hotspot. Species include black-winged pratincole, slaty egret, wattled crane, African skimmer, African pygmy-goose, coppery-tailed coucal, white-backed night
Common species species. Common species are frequently regarded as being at low risk of extinction simply because they exist in large numbers, and hence their conservation status is often overlooked. While this is broadly logical, there are several cases of once common species being driven to extinction such as the passenger pigeon and the Rocky Mountain locust, which numbered in the billions and trillions respectively before their demise. Moreover, a small proportional decline in a common species results in the loss of a large number of individuals, and the contribution to ecosystem function that those individuals represented. A recent paper argued that