Polar bear vs 棕尾蜂鳥

Ursus maritimus compared with Amazilia tzacatl

Key Differences

Polar bear is Vulnerable while 棕尾蜂鳥 is Least Concern.

Taxonomic Classification

Rank	Polar bear	棕尾蜂鳥
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)	Amazilia
Species	Ursus maritimus	Amazilia tzacatl

Evolutionary Relationship

Polar bear and 棕尾蜂鳥 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

查看 Phylum: Chordata

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

棕尾蜂鳥

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	棕尾蜂鳥
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.

棕尾蜂鳥

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。

棕尾蜂鳥

棕尾蜂鸟(Amazilia tzacatl)是中美洲和南美洲西北部最常见的蜂鸟之一，为中等体型，具绿色上体和标志性的亮棕橙色尾羽。分布从墨西哥延伸至厄瓜多尔和特立尼达，栖息于海拔0至2,100米的林缘、庭园、种植园和次生林等多种生境。在喂食台和开花植物处积极捍卫领地，在分布范围内的庭园中频繁可见。被列为无危物种。