Hatched on December 19, the North Island brown kiwi chick weighed just 290g and lost weight as she consumed her internal yolk, but now weighs 400g on a diet including ox heart and live insects.
Once she had grown enough to get back to her hatch weight, feathers were sent for DNA analysis, which confirmed the park favourite was a female.
Tuku is the first hatchling from the park's young breeding couple this season, and has well outlived siblings hatched last year, with none of the complications they faced.
The kiwi's full name is Taonga Tuku Iho, which, translated from Maori, means "A Sacred Legacy" - a reference to her birth during the park's 25th anniversary and on the second anniversary of the death of park founder and conservationist Dick Wilson.
Head wildlife keeper Paul Kavanagh said Tuku, who was "annoyed"to be having her photo taken, was the picture of health and "sleeping a lot, as any babies do".
She received the gender-neutral name at a ceremony on January 7, in which she was carried up a path lined by a "guard of honour" before a Maori blessing at the kiwi enclosure.
Since then, Tuku has lived in a sectioned-off corner of the park's kiwi house, where she will remain for viewing until she outgrows her abode and is shifted to a newly constructed enclosure.
"She will go to the off-display outdoor pen, which we are just making predator proof," Mr Kavanagh said.
"The big thing about this pen is that it was completely funded by donations people have made during our wildlife shows."
He said the park staff were especially excited because Tuku is destined to be released into the wild once she is big enough to ward off predators, most likely in Maungataniwha Forest, near Kaitaia.
"It's great because, ultimately, that's what we want to be doing for the conservation cause and it means more people will come visit, which means we can do even more of this work."
