More than $86,000 was raised from 699 supporters to transport a group of Norfolk Island green parrot fledglings to nearby predator-free Phillip Island.

The $77,000 target was reached with almost a week to spare.

Operation Green Parrot was the most recent in a series of measures Islanders and mainland supporters took to ensure the survival of the species, which was driven to near-extinction by the early 1980s due to introduced rats, cats and other birds on Norfolk.

A rehabilitation project conducted on Phillip Island over the last 30 years successfully cleared the outcrop of feral animals and replant of vegetation the green parrot used as food.

The conservationists had a March to May deadline to transport the birds during the period in which they were old enough to be taken from the nest, but young enough that they would not immediately fly back to Norfolk Island.

The extra money raised from the campaign will go toward further predator eradication and nest protection on Norfolk Island for the birds that will remain.

Norfolk Island National Park manager Craig Doolan said the crowdfunding organisers did not know what sort of reaction to expect.

"We hoped we would reach the goal," he said.

"Nothing like this had really been done before on the island."

The first group of fledglings will be ferried to Phillip Island in two to three weeks.

Conservationists have begun to make the final preparations on the island, including an enclosure in which the parrots will live until they are old enough to be released into the wild.

Mr Doolan said the result could not have been achieved without the help of volunteers and partner organisations, including the Canberra Ornithologists Group.

"The number of birds has quadrupled in recent years," he said.

"People [on Norfolk island] are pretty excited about it. The green parrots are very much an icon of the island and there are people who were first here in the 1970s working on the habitat rehabilitation who are thrilled."