Polar bear vs 白腹棕尾蜂鸟

Ursus maritimus compared with Chalybura buffonii

Key Differences

• Polar bear is Vulnerable while 白腹棕尾蜂鸟 is Least Concern.

Taxonomic Classification

Rank	Polar bear	白腹棕尾蜂鸟
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)	Apodiformes (雨燕目)
Family	Ursidae (Bears)	Trochilidae
Genus	Ursus (Bears)	Chalybura
Species	Ursus maritimus	Chalybura buffonii

Evolutionary Relationship

Polar bear and 白腹棕尾蜂鸟 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 ↓

白腹棕尾蜂鸟

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	白腹棕尾蜂鸟
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.

白腹棕尾蜂鸟

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

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。

白腹棕尾蜂鸟

白腹翠羽蜂鸟是一种以其白色尾下覆羽命名的中大型蜂鸟，具有闪亮的绿色羽毛和鲜艳的粉红红色喙，分布于巴拿马向东至委内瑞拉和特立尼达的南美洲北部潮湿低地及山麓森林。栖息于海拔1400米以内的林缘和林间空地。雄鸟积极捍卫领地。在分布范围内是大花螺旋鸟蕉及其他热带林下植物的重要传粉者。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway