North Island kokako have fewer than 1000 breeding pairs and are categorised as vulnerable.
Duncan was moved from North Island bush to the Ark in the Park forest sanctuary in the Waitakere Ranges several years ago, Speed said.
"He disappeared a couple of years ago. He seems to have made himself at home in Glendowie."
She had no idea how Duncan travelled more than 30km to the street, as he cannot manage sustained flight.
Resident and mum of three Ruth Hill said his birdsong was magical.
"It's like clear drops of sound, just like an organ playing."
Duncan does not mind the noise of buses or children, many of whom had visited him. Like many residents, he was not a fan of souped up cars.
A pair of kokako from Hamilton Zoo will be released in the wild at Puketi Forest in Northland this morning.