Wildebeest, also known as gnu, are large muscular antelopes that ... The single greatest hurdle to the animals during this journey is the Mara River. Crossing points form bottlenecks in which ...

Suzi Eszterhas A newborn wildebeest calf stands on shaky legs. Suzi Eszterhas Two yearling males spar at Serengeti National Park. Suzi Eszterhas At Serengeti National Park, the animals produce ...