Little Spotted Kiwi vs Okarito Kiwi
Apteryx owenii в сравнении с Apteryx rowi
Side-by-Side Comparison
| Характеристика | Little Spotted Kiwi | Okarito Kiwi |
|---|---|---|
| Научное название | Apteryx owenii | Apteryx rowi |
| Отряд | Apterygiformes | Apterygiformes |
| Семейство | Apterygidae | Apterygidae |
| Охранный статус | Near Threatened | Vulnerable |
| Длина | — | — |
| Размах крыльев | — | — |
| Масса | 1296,5 g (45.73 oz) | 2336,25 g (82.41 oz) |
| Питание | Probes leaf litter and friable soil for small earthworms, beetle larvae, and spiders on Kapiti … | Nocturnal feeder in Okarito rainforest; probes soft soils for earthworms, amphipods, and insect larvae near … |
| Размер кладки | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Little Spotted Kiwi
Dense podocarp and broadleaf forest and shrubland on predator-free offshore islands including Kapiti Island, New Zealand. Nests in burrows or rock crevices. Requires moist soil with dense understorey.
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
Little Spotted Kiwi
Male gives a very high-pitched 'ki-ki-ki' whistle; female call is lower and slower 'kriii'. The smallest kiwi; its voice is correspondingly higher-pitched than its relatives.
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
Little Spotted Kiwi
Restricted to Little Barrier, Kapiti, and a few other offshore islands of New Zealand. Flightless and sedentary; critically endangered.
Okarito Kiwi
Endemic to New Zealand's South Island. Flightless, nocturnal, and sedentary in dense temperate rainforest and alpine scrub year-round.
Охранный статус
Little Spotted Kiwi
Okarito Kiwi
How to Tell Them Apart
Little Spotted Kiwi
Fine, soft grayish-white feathers with intricate brown and black barring producing a mottled spotted pattern. Smallest of all kiwis. Sexes similar but females larger. Hair-like plumage texture.
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
Little Spotted Kiwi
The smallest kiwi weighing around 1 kg, with pale grey plumage finely barred with brown. Nocturnal and insectivorous. Now survives mainly on predator-free Kapiti Island after mainland extinction from introduced predators. Population recovering under intensive management.
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.