Blue wildebeest
This species of wildebeest seems to have evolved around 2.5 million years ago. The black wildebeest is believed to have diverged from the blue wildebeest to become a distinct species around a million years ago, in the mid- to late Pleistocene. Fossil evidence suggests that blue wildebeest were quite common in the Cradle of Humankind in the past. Apart from eastern Africa, fossils are commonly found in Elandsfontein, Cornelia, and Florisbad.
White-tailed swallow
The Yabelo wildlife sanctuary, located in southern Ethiopia, is a protected area in which the white-tailed swallow can be found. This area is sheltered against destruction of the ecosystem; however, there is previously noted fire suppression in the area which contributes to bush encroachment.