Polar bear vs 白胁刺花鸟

Ursus maritimus compared with Diglossa albilatera

Key Differences

Polar bear is Vulnerable while 白胁刺花鸟 is Least Concern.

Taxonomic Classification

Rank	Polar bear	白胁刺花鸟
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)	Passeriformes (雀形目)
Family	Ursidae (Bears)	Thraupidae
Genus	Ursus (Bears)	Diglossa
Species	Ursus maritimus	Diglossa albilatera

Evolutionary Relationship

Polar bear and 白胁刺花鸟 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 ↓

白胁刺花鸟

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	白胁刺花鸟
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.

白胁刺花鸟

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。

白胁刺花鸟

白胁穿花鸟（Diglossa albilatera）是栖息于哥伦比亚至玻利维亚安第斯云雾林和林缘的中型穿花雀，具有深灰蓝色羽毛与独特白色胁斑的鲜明对比。与所有穿花雀一样，其尖锐钩状微上翘的喙可刺穿管状花基部盗取花蜜而不授粉，因此有「蜜贼」之名。见于海拔1,500至3,500米，在安第斯花园和林缘常能见到。