Watch the mating ritual of the critically-endangered kakapo play out in full.
During 60 million years of isolation, a host of unusual birds evolved in New Zealand, many of which are now extinct or endangered.
New research has found that the birds’ breeding success depends on oestrogen-like hormones.
The study of fossilised dung has revealed a lost link between New Zealand’s kakapo and the parasitic Hades flower – one of the world’s weirdest blooms.
By the mid-20th century it seemed inevitable the kakapo would be added to the long list of extinct New Zealand birds, but this peculiar parrot wasn’t quite ready for its swan song.