Polar bear vs Robust White-eye

Ursus maritimus compared with Zosterops strenuus

Key Differences

Polar bear is Vulnerable while Robust White-eye is Extinct.

Taxonomic Classification

Rank	Polar bear	Robust White-eye
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Mammalia (memeliler)	Aves (kuş)
Order	Carnivora (etçiller)	Passeriformes (Ötücü kuşlar)
Family	Ursidae (Bears)	Zosteropidae
Genus	Ursus (Bears)	Zosterops
Species	Ursus maritimus	Zosterops strenuus

Evolutionary Relationship

Polar bear and Robust White-eye share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Göster Phylum: Chordata

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Robust White-eye

EX — Extinct

Physical Characteristics

Attribute	Polar bear	Robust White-eye
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

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.

Robust White-eye

Habitat

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

Range

Found in Norway.

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.