The Great Migration - Wildwatch
The Great Migration
Wildwatch.com
The extraordinary annual Great Migration of wildebeest and other grazing herbivores across the Serengeti-Mara ecosystem is one of the greatest spectacles in the natural world. Over two million herbivores partake in this journey, with about 200 000 zebra and 500 000 Thomson's gazelle behind the main players... one-and-a-half million wildebeest!
Not surprisingly, this impressive phenomenon is determined by the availability of grazing, which in turn is dependent upon rainfall. Essentially the wildebeest are taking advantage of the strongly seasonal conditions, spending the wet season on the plains in the south-east, and the dry season in the woodlands of the north-west. However, the sheer weight of their numbers also plays an important role in shaping the environment to their needs.
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