Take a sneak peek at Sir David Attenborough’s latest series: from one of the world’s rarest birds to a never-before-seen critically endangered species

David Attenborough has previewed his latest nature documentary ahead of its release this Sunday.

Stunning images from the documentary show the diversity of the Asian continent after the crew crossed the continent for four years.

The series features animals as far north as the Baikal seal in Russia and as far south as the Pangolin in Singapore.

Thanks to their hard work, never-before-seen footage of rare animals was filmed.

This includes a Gobi bear, one of only 32 left in the world, and marks the first time the endangered species has been captured on camera.

The crew also managed to capture images of one of the rarest birds in the world: the Javan green magpie.

Thanks to their hard work, never-before-seen footage of rare animals was filmed for the first time. This included a Gobi bear, one of only 32 left in the world, and marks the first time the endangered species has been captured on camera

The series features animals as far north as the Baikal seal in Russia

The series features animals all the way south to the Pangolin in Singapore

Fish and a shark caught on camera during the crew’s four-year expedition

In Sri Lanka, the camera crew tried fifty times to capture an elephant reaching into a bus in search of food.

Meanwhile, drones allowed the team to capture images of tigers mating and hunting.

Sir David, who has worked for the BBC since 1952, was 98 when they made the series. Series producer Matthew Wright revealed the crew sang ‘Happy Birthday’ to the national treasure.

Mr. Wright, in words reported by the Day Mirrorsaid: ‘We said ‘happy birthday’. He was businesslike. He said, ‘Let’s move on. What are we going to do now?’

Producer Mark Wheeler said: “He’s quite remarkable. The British public regards him as a truly authentic voice. He’s as enthusiastic as ever.’

Asia starts on Sunday on BBC1, with all episodes on iPlayer.