North Island Brown Kiwi vs Little Spotted Kiwi
Apteryx mantelli в сравнении с Apteryx owenii
Side-by-Side Comparison
| Характеристика | North Island Brown Kiwi | Little Spotted Kiwi |
|---|---|---|
| Научное название | Apteryx mantelli | Apteryx owenii |
| Отряд | Apterygiformes | Apterygiformes |
| Семейство | Apterygidae | Apterygidae |
| Охранный статус | Vulnerable | Near Threatened |
| Длина | — | — |
| Размах крыльев | — | — |
| Масса | 2602,5 g (91.80 oz) | 1296,5 g (45.73 oz) |
| Питание | Probes North Island soils nocturnally for earthworms, cicada larvae, and huhu grubs; takes forest fruits … | Probes leaf litter and friable soil for small earthworms, beetle larvae, and spiders on Kapiti … |
| Размер кладки | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
North Island Brown Kiwi
Subtropical and temperate forests, scrubland, grassland, and modified pasture on North Island, New Zealand. Nests in burrows under tree roots. Tolerates some habitat fragmentation but requires predator control to survive.
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.
Song & Call Comparison
North Island Brown Kiwi
Male gives a shrill, rising 'kee-wee-kee-wee', female a lower, rougher 'kurr-kurr-kurr'. Calls echo through North Island forest at dusk and dawn during their nocturnal forays.
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.
Geographic Range & Migration
North Island Brown Kiwi
Endemic to New Zealand's North Island; occupies forest fragments from Northland to Wellington. Flightless, non-migratory, and nocturnal.
Little Spotted Kiwi
Restricted to Little Barrier, Kapiti, and a few other offshore islands of New Zealand. Flightless and sedentary; critically endangered.
Охранный статус
North Island Brown Kiwi
Little Spotted Kiwi
How to Tell Them Apart
North Island Brown Kiwi
Coarse, bristly dark rufous-brown feathers heavily streaked with blackish-brown. Lacks visible wings and tail. Sexes similar but females larger. Bill long and pale ivory. Legs robust and pale.
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.
About These Birds
North Island Brown Kiwi
The most widespread kiwi with shaggy reddish-brown plumage and a long pale bill. Nocturnal and territorial, using nostrils at the bill tip to sniff out invertebrates. Endemic to North Island, New Zealand. Endangered due to mammalian predators; subject to intensive conservation management.
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.