héron cendré vs ours blanc

Ardea cinerea compared with Ursus maritimus

Key Differences

• héron cendré is Least Concern while ours blanc is Vulnerable.
• ours blanc is 300.0x heavier than héron cendré.
• ours blanc lives longer (25 years vs 15 years).

Taxonomic Classification

Rank	héron cendré	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (oiseau)	Mammalia (mammifères)
Order	Pelecaniformes (Pelecaniformes)	Carnivora (carnivores)
Family	Ardeidae	Ursidae (Bears)
Genus	Ardea	Ursus (Bears)
Species	Ardea cinerea	Ursus maritimus

Evolutionary Relationship

héron cendré and ours blanc share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

héron cendré

LC — Least Concern

Trend: Stable →

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	héron cendré	ours blanc
Diet	Carnivore	Carnivore
Average Lifespan	15 years	25 years
Average Length	95 cm	2.4 m
Average Weight	1.5 kg	450.0 kg

Habitat & Geographic Range

héron cendré

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries).

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.

héron cendré

A large, elegant wading bird reaching up to 1 meter in height, gray herons inhabit wetlands, rivers, lakes, and coastal areas across Europe, Asia, and Africa. Patient, solitary hunters, they stand motionless for long periods before striking fish, frogs, and small mammals with lightning-fast dagger bill strikes. They nest colonially in tall trees in rookeries called heronries, sometimes shared with other colonial waterbirds. Widely distributed and of Least Concern globally.

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