Donald, a Macgregor's bowerbird, lives in the dark woods of the Adelbert Range of Papua New Guinea. Here, atop a mossy platform and around a young sapling, he has woven his spire of sticks and twigs.

In order to capture the dazzling, courtship display of the little-known Flame Bowerbird the crew first had to reach a remote forest in Papua New Guinea, a 6-hour boat journey from the nearest town.

4) Male great bowerbird – Birds can build optical illusions Many animals display to impress potential mates but few are known to build a structure specifically designed to enhance their performance.