Wildlife
Wildlife viewing in the Serengeti Ecosystem with its Great Migration is tremendous! Nowhere on earth is there a sight rivalling the spectacle of 1.5 million hoofed animals on the march. Serengeti has the highest concentration of large mammals on this planet and is famous for its 2,500 lions, the highest concentration found anywhere! Unlike in Kenya and with the exception of the Ngorongoro Crater, you rarely see other tourists or vehicles on a game drive in the Serengeti National Park.
Wild animals can be dangerous and you should not wander off on your own, especially at night, while on safari in Swahili simply means "journey".However most animals are rather frightened by humans and will flee instead of attacking unless cornered or provoked. Keep a sensible distance and treat them with respect.
Climate
The Serengeti falls into the classic bimodal rain pattern of East Africa. The short rains are concentrated in November/December, the long and heavier rains in March - May. Mean monthly maximum temperatures are relatively uniform throughout the year being constant around 27 to 28 degrees centigrade or 75 - 80 degrees Fahrenheit at Seronera. At Ngorongoro Crater the nights can be very chilly due to altitude.
Any time other than during the long rains in April and May is a perfect time to be on Safari in Northern Tanzania. Game viewing and the number of other tourists varies widely according to the seasonal concentrations of wildlife . Most Safari operators will adjust their itineraries accordingly.
Birding
Early and late daylight hours are usually the best times to observe the more than 518 species of birds which have been identified in the Serengeti. Some of them are Eurasian migrants who are present in the European winter months from October to April.
History
Two World Heritage Sites and two Biosphere Reserves have been established within the 30,000 km² region. Its unique ecosystem has inspired writers from Ernest Hemingway to Peter Mattheissen, filmakers like Hugo von Lawick and Alan Root as well as numerous photographers and scientists.
The Serengeti ecosystem is one of the oldest on earth. The essential features of climate, vegetation and fauna have barely changed in the past million years. Early man himself made an appearance in Olduvai Gorge about two million years ago. Some patterns of life, death, adaptation and migration are as old as the hills themselves.
It is the migration for which Serengeti is perhaps most famous. Over a million wildebeest and about 200,000 zebras flow south from the northern hills to the southern plains for the short rains every October and November, and then swirl west and north after the long rains in April, May and June. So strong is the ancient instinct to move that no drought, gorge or crocodile infested river can hold them back.
Over 90,000 tourists visit the Park each year.