Humans, now

World Population Prospects 2024, UN DESA, medium variant (CC BY 3.0 IGO)

Tracking what's alive on Earth and what affects it.

Humans, now

See it among the others

On the wall: 1,000 or fewer left in the wild

Kiwikiu (Maui parrotbill)

about135

Estimate, no range

2021

Pseudonestor xanthophrys

Hawaiʻi, east Maui high-elevation forest (about 2,155 hectares)

Counted 2021, by the U.S. Fish and Wildlife Service.

Kiwikiu (Maui parrotbill), wild (Waikamoi Preserve, Maui)
Photo: Zach Pezzillo, Maui Forest Bird Recovery Project, CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0), via Wikimedia CommonsLicence: CC BY-SA 4.0In the photo: wild (Waikamoi Preserve, Maui)

The latest official number for the kiwikiu is about 135 birds in the wild: an estimate with no range, dated 2021 and published by the U.S. Fish and Wildlife Service.

Avian malaria eventually killed every kiwikiu moved to Nakula Natural Area Reserve, the U.S. Fish and Wildlife Service reports.

How it was counted

The figure is an estimate of birds (not pairs, nests or area) that covers every kiwikiu in the wild, published by the U.S. Fish and Wildlife Service without a range. The 2 birds in captivity, which do not breed, are counted separately and are not part of it.

This is an estimate that the U.S. Fish and Wildlife Service published without a range, so read it as about 135 birds rather than exactly that many.

What moves it

The U.S. Fish and Wildlife Service names avian malaria, which eventually killed every bird moved to Nakula Natural Area Reserve, and a climate increasingly favourable to mosquitoes, which has confined the kiwikiu to higher forest. The agency also names people and feral pigs destroying habitat, and introduced predators such as rats, feral cats and mongooses.

The next count

Counts of the kiwikiu come at irregular intervals, and no date is known for the next (checked 12 November 2026).

Sources

What changed

  • 12 November 2026 Added to Live Species, on the wall (1,000 or fewer): About 135 (Estimate, no range, 2021).

Every change on the site

Next on the wall

Sihek (Guam kingfisher), captive (Smithsonian National Zoological Park, Washington) On the wall: 1,000 or fewer left in the wildSihek (Guam kingfisher) 9Head count · September 2025

See all 47 on the wall

The letter

The letter comes once a month, on the first Thursday. It gives what changed on Live Species, one animal up close and the humans figure for contrast.