Brown-headed Gull vs Polar bear

Chroicocephalus brunnicephalus compared with Ursus maritimus

Key Differences

• Brown-headed Gull is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Brown-headed Gull	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Charadriiformes (Charadriiformes)	Carnivora (Carnivorans)
Family	Laridae	Ursidae (Bears)
Genus	Chroicocephalus	Ursus (Bears)
Species	Chroicocephalus brunnicephalus	Ursus maritimus

Evolutionary Relationship

Brown-headed Gull and Polar bear share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown-headed Gull

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Brown-headed Gull	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Brown-headed Gull

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Norway and Taiwan.

Polar bear

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.

Brown-headed Gull

The Brown-headed Gull (Chroicocephalus brunnicephalus) is a species in the genus Chroicocephalus. Typically found in various aerial, terrestrial, and aquatic environments. Distributed across Norway and Taiwan.

Polar bear

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