疣鼻天鵝〔赤嘴天鵝〕 vs Polar bear

Cygnus olor compared with Ursus maritimus

Key Differences

• 疣鼻天鵝〔赤嘴天鵝〕 is Near Threatened while Polar bear is Vulnerable.
• 疣鼻天鵝〔赤嘴天鵝〕 is herbivore while Polar bear is carnivore.
• Polar bear is 37.5x heavier than 疣鼻天鵝〔赤嘴天鵝〕.
• Polar bear lives longer (25 years vs 20 years).

Taxonomic Classification

Rank	疣鼻天鵝〔赤嘴天鵝〕	Polar bear
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	Aves (鳥綱)	Mammalia (哺乳動物)
Order	Anseriformes (雁形目)	Carnivora (食肉目)
Family	Anatidae	Ursidae (Bears)
Genus	Cygnus	Ursus (Bears)
Species	Cygnus olor	Ursus maritimus

Evolutionary Relationship

疣鼻天鵝〔赤嘴天鵝〕 and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

疣鼻天鵝〔赤嘴天鵝〕

NT — Near Threatened

Population: ~600.0K

Trend: Increasing ↑

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	疣鼻天鵝〔赤嘴天鵝〕	Polar bear
Diet	Herbivore	Carnivore
Average Lifespan	20 years	25 years
Average Length	1.5 m	2.4 m
Average Weight	12.0 kg	450.0 kg

Habitat & Geographic Range

疣鼻天鵝〔赤嘴天鵝〕

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 8 distinct biome types.

Range

Widely distributed across Africa (South Africa), Asia (4 countries), Europe (24 countries), North America (Canada, Dominican Republic, United States), Oceania and the Pacific (New Zealand), and South America (Colombia, Peru). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

疣鼻天鵝〔赤嘴天鵝〕

大天鹅（Cygnus olor）是全球最常见的天鹅，也是最大的飞禽之一，体重最高可达 15 千克，栖息于欧亚大陆的湖泊、河流和沿海湾，北美和澳大利亚也有广泛引入种群。尽管名字暗示其沉默，但大天鹅会发出嘶嘶声、咕噜声和振翅声。雄鸟极力捍卫领地，有力的翅膀打击足以伤人或令狗溺毙。

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。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway