The Wildebeest Migration is an annual movement of over a million wildebeests, along with zebras and other animals, across the Serengeti in Tanzania and the Maasai Mara in Kenya. This migration is driven by the search for fresh grazing pastures and water, following seasonal rains. Typically occurring from May to October, the migration involves crossing rivers, which can be perilous due to predators like crocodiles. The journey is crucial for the survival of these animals, as it allows them to find food and reproduce in safer environments.