New Zealand’s first sheep were set ashore by Captain James Cook in 1773.
At their peak in 1982, there were twenty-two sheep for every person in New Zealand.
Nowadays, the numbers have fallen by two thirds and are now estimated at just over seven sheep per person.
Photograph: Nick Easton/BBC
Kea are the only true alpine parrots in the world and thrive as cunning opportunists in the freezing conditions of the Southern Alps.
Kea are thought to have developed their wide array of food-finding strategies during the last great ice age, where they learned to adapt using their unusual powers of curiosity.
Photograph: Tom Walker/BB