How to watch the great migration of animals from Serengeti

Epic journey of nearly 2 million wildebeest, gazelle and zebras to Kenya's Maasai Mara reserve is being tracked online

Every year a million wildebeest, half a million gazelle and 200,000 zebra make the perilous trek from the Serengeti park in Tanzania to the Maasai Mara reserve in Kenya in their search for water and grazing land. It is one of nature's most spectacular sights - and one that few people are able to see first hand.

But this year the dramatic display is being broadcast live on the web - complete with expert commentary.