"There's also the threat of climate change, which has the potential to limit their habitat range, increase pest numbers, and in some cases reduce their ability to forage for food."
This year the conservation status of each bird had been added to the competition's website, showing how many were threatened.
"I think a lot of people will be surprised to see how many of our native birds are at risk," Ms Collins said. "Tragically, a third are in danger of becoming extinct."
Groups campaigning for different birds had come out in force, including rangers at Wellington's Zealandia, who had thrown their weight behind the tieke (saddleback), which last week running 21st out of 54, with 389 votes.
Leading was the kea, with 4795 votes.
No bird has won the title twice. Previous winners were kokako, bar-tailed godwit, fairy tern, yellowhead, karearea, pukeko, kakariki, kiwi, kakapo, grey warbler, fantail and tui.