Quote from The Independent
Africa's biannual miracle is being performed again. The largest and longest overland migration on Earth is in full spate. More than two million wildebeest and zebra, with a few thousand gazelle hanging around the fringes, have reached the south-east corner of the Serengeti, in the early stages of their 800km northward trek from the parched plains of southern Tanzania to the damp grasslands on either side of the Kenyan border.
After a few days' grazing to restore their strength, this impossibly huge, braying assembly will risk life and limb by resuming a journey that they and their ancestors have been making twice a year since prehistory. Defying the long odds against their survival, they will set a course far beyond the horizon, following the smell of rain on the wind. Nine out of 10 will reach their destination but, just as they become accustomed to the creature comforts of their new home, they will up sticks again and head back to where they started. It almost defies belief.