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Wildebeest
Short and long grass plains and seasonal floodplains
Habitat
Year round in the Serengeti ecosystem
Best Viewing Season
Least Concern
Conservation Status
Introduction
Two million wildebeest surge across the Serengeti in relentless pursuit of fresh grass, creating Earth's largest land migration. This rhythmic cycle, choreographed by rainfall and driven by predator pressure, unfolds year-round across Tanzania's vast grasslands. Witness river crossings where crocodiles and lions converge, or calving season when vulnerable calves concentrate predators.
Behaviour & Facts
You hear them before you see them, a low continuous grunting that carries half a kilometre across the grass. Then the horizon starts moving. A herd of wildebeest in full migration is not a herd in any normal sense, it is a slow moving river of animals five kilometres wide that takes hours to pass. Standing on a kopje and watching it flow beneath you is the closest thing in modern wildlife travel to seeing the African plains as they have always been. The wildebeest is the engine of the Serengeti ecosystem, and almost everything else in this part of Tanzania depends on its movements. Roughly 1.5 million animals follow an annual circuit of more than a thousand kilometres, chasing the rains and the fresh grass they bring. The whole loop has been running for at least a million years and is the largest land migration on Earth. A wildebeest is built for movement and almost nothing else. Heavy shoulders, sloping back, narrow hindquarters, beard like an old man. It is essentially a grass burning machine, and it converts more biomass into protein, faster, than any other large mammal in Africa. New born calves are on their feet within three minutes of birth and running with the herd within fifteen, the fastest neonatal mobility of any large mammal.
Jack Fleckney - Legend Head Guide
Their cooperative behaviour is the reason the migration works. Wildebeest navigate by memory, smell, and the herd's collective sense of where the rain has fallen. There is evidence they can detect distant thunderstorms from more than 50 kilometres away. They calve in tight synchrony, with around 80 percent of the year's calves born inside a three week window in February. This swamps the local predators with more newborns than they can possibly eat. The river crossings get most of the attention, but more wildebeest actually die quietly on the open plains from exhaustion, drought and predation than die dramatically in the rivers. The crossings are a small part of the migration story. The rest is daily grinding movement, constant low risk predator attrition, and a slow cycle of grass and hoof and horn that has been the defining rhythm of these plains since the ice age. Tanzania's wildebeest population is the largest unfenced ungulate population on Earth. Roughly 250,000 animals die each year on the circuit and roughly 250,000 are born to replace them. The number has been remarkably stable for decades, which is the clearest evidence anywhere that the Serengeti ecosystem is still functioning the way it was always meant to.
Where to see
Wildebeest
in Tanzania
When to see the wildebeest migration?
The migration is in Tanzania for roughly nine months of the year, so any time from November to July offers excellent sightings. The two peak experiences are calving season in the southern Serengeti (late January to early March) and the Mara River crossings in the northern Serengeti (August to October). Legend Expeditions times our itineraries to whichever phase you want to see.
Where does the migration actually go?
The Serengeti is the only park that hosts the migration year round, but the area shifts by month. The southern plains from December to March, the central and western Serengeti from April to July, and the northern Serengeti from August to October. Our guides track herd movements in real time and adjust your route.
How many wildebeest are in the migration?
The Serengeti Mara migration includes roughly 1.5 million wildebeest, alongside around 250,000 zebra and 400,000 Thomson's gazelle. The total moving herd is close to two million animals and is the largest land migration on Earth. The numbers have been stable for decades.
Will I witness a river crossing?
River crossings happen mostly in August, September and early October at the Mara River in the northern Serengeti. They are unpredictable, but a few days based at a northern Serengeti camp gives you a good chance of seeing one. We recommend at least three nights in the Kogatende area to maximise your odds.
Why do wildebeest migrate at all?
The migration is driven by rainfall and grass quality. The southern plains have nutrient rich short grass that is perfect for calving but disappears when the dry season hits. The northern woodlands hold longer, less nutritious grass that lasts through the dry months. The herds follow the rains in a continuous loop.
What eats wildebeest on the plains?
Lions, hyenas, cheetahs, leopards and crocodiles all take wildebeest, with lions and hyenas accounting for most adult kills and crocodiles claiming their share at the river crossings. The calving season brings massive predator activity to the southern Serengeti. It is one of the best windows for seeing predator behaviour anywhere in Africa.
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