More frog than parrot,
it can be heard up to three miles away.
In a breeding season,
he will boom non-stop for eight hours every night for up to three months.
But a female will only respond if there are plenty of rimu seeds about.
So while these birds may nest in burrows like rabbits,
unfortunately,
they don't breed like them.
And their numbers have dwindled dramatically.
Today,
fewer than a hundred kakapo survive and precious chicks receive a helping hand.
Captive rearing has helped raise the number of kakapo from just 51 in 1995
to the 91 birds alive today.
They used to number in the hundreds of thousands.
Today, their future is truly in our hands.
So is this now an empty forest Actually,
the trees are under attack like never before.
There's a menace lurking amongst the foliage.
During the day, it slumbers.
But under cover of darkness,
an invader is revealed.