These astonishing photographs show the scenes as eight million bats flock together in one of Africa’s largest and most spectacular mammal migrations.

The 6ft-wingspan fruit bats couldn’t have found a tinier corner of the continent to live on – just one acre of forest at the Kasanka National Park in Zambia.

Upon coming home after their daily hunt each tree holds up to 10 tons of bats, making this the highest density mass of warm-blooded mammals on Earth.