East Africa is a land which is constantly changing. To survive here, creatures must be able to deal with unpredictable twists and turns - wet turning to dry, feast to famine, cold to hot - no matter how hostile it becomes.
From dense forests to snow-capped peaks, steamy swamps and endless savannah, this unique and varied land is also a haven for life, supporting large animals in numbers found nowhere else on Earth. But away from the familiar, forever-travelling herds, there are a huge cast of other characters - lizards that steal flies from the faces of lions, vast dinosaur-like birds who stalk catfish through huge wetlands, and an eagle who risks everything on the arrival of ten million bats from a far-off rainforest.
'Monster' bird reveals dark side
Africa: Savannah Q&A
Elephants' ears, pangolins, camera techniques and much more... The production team from David Attenborough's Africa series answer your Twitter questions about episode two.
The animals: the stars of the show
Size of the crew...
It's all in the planning...