Polar bear vs 斑纹舞雀

Ursus maritimus compared with Saltator striatipectus

Key Differences

Polar bear is Vulnerable while 斑纹舞雀 is Least Concern.

Taxonomic Classification

Rank	Polar bear	斑纹舞雀
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)	Saltator
Species	Ursus maritimus	Saltator striatipectus

Evolutionary Relationship

Polar bear and 斑纹舞雀 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 ↓

斑纹舞雀

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	斑纹舞雀
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.

斑纹舞雀

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。

斑纹舞雀

纹胸唐纳雀（Saltator striatipectus）是一种栖息于哥伦比亚、厄瓜多尔和巴拿马太平洋沿海低地的中型唐纳雀，因胸部和两胁有浓密的棕褐色和白色条纹而得名。栖息于林缘、灌丛和次生林，成对或小群采食种子和果实。被列为无危种，但其分布范围局限于因农业扩张和毁林而日益受到威胁的太平洋低地生境。它们会发出唐纳雀特有的悦耳哨声。