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🧬 Biological Classification (Kingdom to Species)Apteryx mantelli

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Apterygiformes

Family

Apterygidae

Genus

Apteryx

Species

Apteryx mantelli

Aves🥩 Carnivore

North Island Brown Kiwi

Apteryx mantelli (North Island Brown Kiwi · ノースアイランドブラウンキーウィ)

🛡️ Conservation Status (IUCN Red List)VU (Vulnerable)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Carnivore

Length · Height

40cm · 50~60cm

Mass · Top Speed

2~3.9kg · No data

Habitat & Fossil Locality

Native and exotic forests, shrublands, pine plantations, and rough farmland on the North Island of New Zealand, up to 1,400 m elevation

💡 Everyday Comparisons for Size, Mass & Speed

💡 Roaming dogs on walks are the biggest threat to adult kiwis.
💡 Its weight of 3.9 kg is about 40% of a 10 kg bag of rice (Comparison).
💡 A single egg accounts for about 15% of the female's body weight, and its average length of 124 mm is more than half the short side of a sheet of A4 paper (210 mm) (Comparison).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)

⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)40

Site-computed relative index from recorded values; not a formal scientific metric.

#북섬갈색키위#Apteryx mantelli

📖 1. Overview

The North Island Brown Kiwi is a small flightless bird active at night and found only on the North Island of New Zealand.

🦴 2. Anatomy & Morphology

It has only tiny vestigial wings, no tail, hair-like feathers, and a long curved bill. With nostrils at the tip of its bill, it finds food by smell rather than sight, and has small eyes and large ear openings.

🔍 3. Ecology & Behavior

At night it probes the ground to eat small invertebrates such as earthworms, beetle larvae, and cicada nymphs, along with some fallen berries. It nests in burrows or hollow logs, and the male incubates the egg for 75–90 days.