hibou grand-duc vs ours blanc

Bubo bubo compared with Ursus maritimus

Key Differences

• hibou grand-duc is Endangered while ours blanc is Vulnerable.
• ours blanc is 150.0x heavier than hibou grand-duc.
• ours blanc lives longer (25 years vs 20 years).

Taxonomic Classification

Rank	hibou grand-duc	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (oiseau)	Mammalia (mammifères)
Order	Strigiformes (Owls)	Carnivora (carnivores)
Family	Strigidae (True Owls)	Ursidae (Bears)
Genus	Bubo (Eagle Owls)	Ursus (Bears)
Species	Bubo bubo	Ursus maritimus

Evolutionary Relationship

hibou grand-duc and ours blanc share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

hibou grand-duc

EN — Endangered

Population: ~400.0K

Trend: Stable →

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	hibou grand-duc	ours blanc
Diet	Carnivore	Carnivore
Average Lifespan	20 years	25 years
Average Length	70 cm	2.4 m
Average Weight	3.0 kg	450.0 kg

Habitat & Geographic Range

hibou grand-duc

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Found across Europe (9 countries) and South America (Ecuador). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

ours blanc

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

hibou grand-duc

The world's largest owl species by height and weight, Eurasian eagle-owls have wingspans up to 1.9 meters and inhabit rocky landscapes, forest edges, and cliffs from Europe across Asia to China. Silent nocturnal hunters with powerful talons, they prey on rabbits, hares, foxes, and even other raptors. Their deep, resonant hooting carries over great distances. Relatively stable in population, though persecuted historically.

ours blanc

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway