Polar bear vs 赤頸鸊鷈

Ursus maritimus compared with Podiceps grisegena

Key Differences

• Polar bear is Vulnerable while 赤頸鸊鷈 is Not Evaluated.

Taxonomic Classification

Rank	Polar bear	赤頸鸊鷈
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Carnivora (食肉目)	Podicipediformes (䴙䴘目)
Family	Ursidae (Bears)	Podicipedidae
Genus	Ursus (Bears)	Podiceps
Species	Ursus maritimus	Podiceps grisegena

Evolutionary Relationship

Polar bear and 赤頸鸊鷈 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

赤頸鸊鷈

NE — Not Evaluated

Physical Characteristics

Attribute	Polar bear	赤頸鸊鷈
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.

赤頸鸊鷈

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

赤頸鸊鷈

赤颈䴙䴘（Podiceps grisegena）在IUCN红色名录中被列为未评估（NE）。尚未依据IUCN红色名录标准进行评估，保育状况有待确定。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway