A kaka at the Orokonui bird sanctuary. Photo by Stephen Jaquiery.
The kaka, which had been living in an aviary at the ecosanctuary for six months before the release, had not ventured far since.
They are the first species to be reintroduced within the predator-proof fenced area.
Some of the birds, which were being tracked daily, had popped over the fence for a look around but came back very quickly, she said.
They had also been returning to the aviary to rest, especially on colder days.
"They are getting stronger flying around," Ms Baillie said.
The birds were feeding from the platform provided within the ecosanctuary but were also eating from the nectar and berry vegetation which had been planted within the fence.
