"Tahi has been very loved by the team. For most of us, he was one of the first kiwi we cared for when we became involved with kiwi conservation.
"It's certainly bittersweet, but it's great to know that he's going into the wild where he can roam free around a predator-controlled forest."
Tahi was released into the wild because he was such a good kiwi dad and was "becoming over-represented in the gene pool of captive kiwi".
"We released him into an area where there are two female kiwi without mates, with the hope that he will establish a territory, find a mate and incubate more eggs in the wild."
While at Kiwi Encounter, Tahi contributed to the successful hatching of 20 chicks. He was also a ''foster dad'' to about 16 eggs.
Ms McCormick said Kiwi Encounter also released a male kiwi, aged 37, into the wild in 2015 and he had since bred successfully.
There are 14 kiwi remaining at Kiwi Encounter which are part of the captive management programme.