🪐 View in 3D Galaxy 📏 View on 3D Scale Stage

🧬 Biological Classification (Kingdom to Species)Strix nebulosa

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Strigiformes

Family

Strigidae

Genus

Strix

Species

Strix nebulosa

Aves🥩 Carnivore

Great Grey Owl

Strix nebulosa (Great Grey Owl · カラフトフクロウ)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Carnivore

Length · Height

No data · 84cm (Wingspan 1.524m)

Mass · Top Speed

0.79~1.5kg · No data

Habitat & Fossil Locality

Dense coniferous forests of the Northern Hemisphere (Canada and mountains of the western United States); forest edges and meadows in winter

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its maximum weight of 1.454 kg is similar to a 1.5 L bottle of water, and its wingspan of about 1.5 m is about the width of an adult's outstretched arms (Comparison).
💡 It helps clear carrion and keep rodent numbers in check, and as a rare sight, it draws birdwatchers from many places (ADW 'Economic Importance for Humans: Positive').
💡 Some Alaska Indigenous peoples also use this bird as a food source in winter because of its rich stored fat (ADW).

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)35

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

#큰회색올빼미#Strix nebulosa

📖 1. Overview

The Great Grey Owl is a large owl living in northern coniferous forests and is the tallest owl in Alaska. It is characterized by a round head without ear tufts and a gray body.

🦴 2. Anatomy & Morphology

Its round, tuftless head has a distinct facial disk marked with gray concentric circles, and its bill and eyes are yellow. The facial feathers direct sound toward its ear openings, while an asymmetrical skull and large ear openings let it pinpoint sounds accurately.

🔍 3. Ecology & Behavior

Small rodents such as voles and pocket gophers make up 80–90% of its diet, and it can locate rodents by sound even about 60 cm beneath the snow and plunge in to catch them. It hunts well by day or night and lays 2–5 eggs in nests abandoned by raptors or crows.