The last kiwi killed by a dog at the Whangarei Heads was recorded on April 2, 2014.
Mr Hamilton, who has been at the centre of Northland efforts to boost the kiwi population for the past 15 years, said kiwi numbers on the Whangarei Heads had grown from just 80 in 2000, to more than 675 at last population count.
Wiggle and Stevie had both grown up on Limestone/Matakohe Island and made the short transfer in a box to Whangarei Heads.
American visitor Mike Mead said it was a privilege to get so close to a kiwi.
He sailed into Whangarei in November 2014 and this was the first time he had seen a kiwi.
"It's so amazing. We couldn't go home with out seeing a real kiwi," he said.
Farmer Dave Asplin said the kiwi release was most welcome.
Only the night before he had heard a kiwi call from the paddock near the main house, and foot prints were discovered near the old cowshed buildings.
Since moving to the property 18 months ago, he had fenced and planted waterways and created ponds to encourage bird life.
"To have kiwi on the farm was special.
"I've also been trapping and laying baits to get rid of the stoats to give the kiwi an even better chance," he said.
Wiggle and Stevie were carried in boxes to two separate burrows that had been dug by Mr Hamilton.
Children helped pick grass to make a bed in the burrow Wiggle was released into.
All kiwi that are released are microchipped so they can be identified during monitoring.