Great Spotted Kiwi vs North Island Brown Kiwi
Apteryx haastii เปรียบเทียบกับ Apteryx mantelli
Side-by-Side Comparison
| คุณสมบัติ | Great Spotted Kiwi | North Island Brown Kiwi |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Apteryx haastii | Apteryx mantelli |
| อันดับ | Apterygiformes | Apterygiformes |
| วงศ์ตระกูล | Apterygidae | Apterygidae |
| สถานะการอนุรักษ์ | Vulnerable | Vulnerable |
| ความยาว | — | — |
| กว้างปีก | — | — |
| น้ำหนัก | 2156.25 g (76.06 oz) | 2602.5 g (91.80 oz) |
| อาหาร | Largest kiwi; probes deep into South Island forest soils for earthworms, weta, and huhu grubs … | Probes North Island soils nocturnally for earthworms, cicada larvae, and huhu grubs; takes forest fruits … |
| จำนวนไข่ | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Great Spotted Kiwi only
North Island Brown Kiwi only
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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.
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.
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.
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.
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.
North Island Brown Kiwi
Endemic to New Zealand's North Island; occupies forest fragments from Northland to Wellington. Flightless, non-migratory, and nocturnal.
สถานะการอนุรักษ์
Great Spotted Kiwi
North Island Brown 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.
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.
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.
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.