Polar bear vs 暗綠領蜂鳥

Ursus maritimus compared with Heliangelus exortis

Key Differences

Polar bear is Vulnerable while 暗綠領蜂鳥 is Least Concern.

Taxonomic Classification

Rank	Polar bear	暗綠領蜂鳥
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)	Heliangelus
Species	Ursus maritimus	Heliangelus exortis

Evolutionary Relationship

Polar bear and 暗綠領蜂鳥 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 ↓

暗綠領蜂鳥

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	暗綠領蜂鳥
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.

暗綠領蜂鳥

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。

暗綠領蜂鳥

这是一种高海拔安第斯蜂鸟，因雄鸟喉部的琥珀橙色光泽如电气石（碧玺）而得名。栖息于哥伦比亚、委内瑞拉和厄瓜多尔海拔2,200至4,100米的帕拉莫草甸、云雾林和林缘地带。雄鸟的喉部会随光线角度呈现橙铜色至紫色的变化。与所有日天使蜂鸟一样，它们是蜂鸟中相对耐寒的物种，夜间可大幅降低代谢率以节省能量应对寒冷的安第斯夜晚。