Polar bear vs 翠綠輝尾蜂鳥

Ursus maritimus compared with Metallura williami

Key Differences

Polar bear is Vulnerable while 翠綠輝尾蜂鳥 is Least Concern.

Taxonomic Classification

Rank	Polar bear	翠綠輝尾蜂鳥
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)	Metallura
Species	Ursus maritimus	Metallura williami

Evolutionary Relationship

Polar bear and 翠綠輝尾蜂鳥 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 ↓

翠綠輝尾蜂鳥

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	翠綠輝尾蜂鳥
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.

翠綠輝尾蜂鳥

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

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。

翠綠輝尾蜂鳥

翠绿金尾蜂鸟(Metallura williami)是哥伦比亚和厄瓜多尔安第斯高地的中型蜂鸟，栖息于海拔2900至4600米的开放帕拉莫草地和林缘。雄鸟具有闪亮的蓝绿色尾羽和独特的绿色羽毛，雌鸟腹部颜色较暗淡。与所有蜂鸟一样，以花蜜和小型昆虫为食，以每秒超过50次的翅频悬停飞行。被评为无危，安第斯种群稳定。