Usually starting in May, guests to the Serengeti National Park will be able to witness what is known as the Great Migration when huge herds of wild animals search for greener pastures after the rainy season. The most famous animal in this procession is the wildebeest as there are more than 1.5 million of this herbivore, but the annual migration into Kenya also follows hundreds of thousands zebra, buffalo and gazelle. The animals form a procession with the young and weak bringing up the rear. Stalking in the bushes behind them, are large numbers of patient predators including lions, cheetahs, hyenas and wild dogs. Crocodiles lurk in rivers. The best time to witness this incredible natural show is between May and July and again on their return in mid-November. Visitors can view game in four-wheel drive vehicles or by joining a game drive or even watching from above in a hot air balloon. The Serengeti’s ecosystem supports the largest concentration of wildlife in the world, with over three million different animals and birds.