Polar bear vs 紋喉隱蜂鳥

Ursus maritimus compared with Phaethornis striigularis

Key Differences

Polar bear is Vulnerable while 紋喉隱蜂鳥 is Least Concern.

Taxonomic Classification

Rank	Polar bear	紋喉隱蜂鳥
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)	Phaethornis
Species	Ursus maritimus	Phaethornis striigularis

Evolutionary Relationship

Polar bear and 紋喉隱蜂鳥 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 ↓

紋喉隱蜂鳥

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	紋喉隱蜂鳥
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.

紋喉隱蜂鳥

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。

紋喉隱蜂鳥

纹喉隐士蜂鸟（Phaethornis striigularis）是一种小型隐士蜂鸟，栖息于从墨西哥南部经中美洲至南美洲北部的湿润林下层。绿色上体，面部有独特的白色条纹，弯曲的喙适合采食火鸟蕉和生姜的花朵。它们沿固定的陷阱线蜜源路线穿行于茂密的森林中。雄鸟在求偶场聚集，持续重复鸣唱以吸引雌鸟。它们是分布范围内林下火鸟蕉和闭鞘姜植物的重要传粉者。