Each year, approximately 1.4 million wildebeest, 250,000 Burchell’s zebra and a vast number of Thompson’s gazelle make the yearlong round trip from Tanzania’s Serengeti to the Masai Mara in Kenya. The herds can be found on the lush plains of the Serengeti National Park from November to May. From January onward, after calving, wildebeest, zebra and Thompson’s gazelle alternate between the woodlands and plains depending on the weather. In May, as the Serengeti grasses dry up, the herds begin the roughly 500-mile Migration. They move north, and by June they are in the more lush plains of Kenya’s Masai Mara. This is where they generally stay until October.