Sir David Attenborough's new documentary traces his lifelong passion for birds of paradise.

For five centuries "birds from paradise" have captivated explorers, naturalists, artists, film-makers and even royalty. They are also one of David Attenborough's lifelong passions.

He was the first to film many of their beautiful and often bizarre displays and has spent a lifetime tracking them all over the jungles of New Guinea.

Here, David reflects on his first attempt to film the birds of paradise, their bizarre and exotic courtship rituals, his experience at a state-of-the-art breeding facility in Qatar, and how there are always wonderful things to discover.