Rivals

S1 E2: After ruling the skies for about 60 million years, insects were joined by a new group of creatures: vertebrates. The pioneers of the backboned flyers were the prehistoric pterosaurs, followed by a group of dinosaurs that acquired feathers. Finally, after a global extinction event, birds and the newly emerged bats took command of the skies. Join naturalist David Attenborough as he investigates the jungles of Borneo and the volcanic ash of China to track the evolution of these remarkable flying animals.