Great Spotted Kiwi vs Okarito Kiwi
Apteryx haastii 比較対象 Apteryx rowi
Side-by-Side Comparison
| 属性 | Great Spotted Kiwi | Okarito Kiwi |
|---|---|---|
| 学名 | Apteryx haastii | Apteryx rowi |
| 目 | Apterygiformes | Apterygiformes |
| 科 | Apterygidae | Apterygidae |
| 保全状況 | Vulnerable | Vulnerable |
| 体長 | — | — |
| 翼開長 | — | — |
| 体重 | 2156.25 g (76.06 oz) | 2336.25 g (82.41 oz) |
| 食性 | Largest kiwi; probes deep into South Island forest soils for earthworms, weta, and huhu grubs … | Nocturnal feeder in Okarito rainforest; probes soft soils for earthworms, amphipods, and insect larvae near … |
| 一腹卵数 | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Great Spotted Kiwi
Subalpine shrubland, montane and alpine grassland, and beech forest at 600–1,500 m on South Island, New Zealand. Nests in burrows under tree roots or in rock piles. Tolerates cold exposed conditions.
Okarito Kiwi
Restricted to Okarito sanctuary forest and adjacent lowland podocarp-hardwood forest on the West Coast of South Island, New Zealand. Nests in burrows on the forest floor in moist dense bush. Elevation below 200 m.
Song & Call Comparison
Great Spotted Kiwi
Male emits a high, repeated whistle 'kee'; female gives a lower, grating 'kurr-kurr'. The Great Spotted Kiwi's calls are the most powerful of all kiwi species, carrying furthest.
Okarito Kiwi
Male produces a long, clear whistled 'ooo-kee-wee', female responds with a lower, raucous 'kurrr'. The Rowi's call is softer and slightly higher-pitched than other kiwi species.
Geographic Range & Migration
Great Spotted Kiwi
Endemic to Okarito on New Zealand's South Island West Coast. Flightless, non-migratory; inhabits kahikatea swamp forest year-round.
Okarito Kiwi
Endemic to New Zealand's South Island. Flightless, nocturnal, and sedentary in dense temperate rainforest and alpine scrub year-round.
保全状況
Great Spotted Kiwi
Okarito Kiwi
How to Tell Them Apart
Great Spotted Kiwi
Grayish-brown hair-like feathers with bold white and dark brown banding, creating heavily spotted pattern on body. Largest spotted kiwi. Pale gray wash on face and throat. Sexes similar.
Okarito Kiwi
Grayish-brown, hair-like plumage with faint rufous streaking; paler and grayer than other brown kiwis. Facial region may show faint whitish wash. No wing or tail feathers visible. Sexes similar.
About These Birds
Great Spotted Kiwi
The largest kiwi, heavily built with grey-brown plumage banded with reddish-brown. Nocturnal, highly territorial, and monogamous with long-term pair bonds. Feeds on earthworms, beetles, and berries by deep probing. Endemic to montane South Island. Unusually, both sexes share incubation duties.
Okarito Kiwi
The rarest kiwi with pale grey-brown plumage and a very long bill. Nocturnal and territorial, detected mainly by its high-pitched call. Endemic to the Okarito forest on New Zealand's West Coast. Listed as Vulnerable; intensive management including Operation Nest Egg has stabilized the small population.