Polar bear vs 灰蓝食籽雀

Ursus maritimus compared with Sporophila schistacea

Key Differences

• Polar bear is Vulnerable while 灰蓝食籽雀 is Least Concern.

Taxonomic Classification

Rank	Polar bear	灰蓝食籽雀
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)	Sporophila
Species	Ursus maritimus	Sporophila schistacea

Evolutionary Relationship

Polar bear and 灰蓝食籽雀 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

灰蓝食籽雀

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	灰蓝食籽雀
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.

灰蓝食籽雀

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。

灰蓝食籽雀

一种栖息于从尼加拉瓜经中美洲至南美洲太平洋坡延伸到玻利维亚的开阔草原、热带稀树草原和林缘的小型板岩蓝色食籽鸟，雄鸟全身羽毛呈均匀深板岩灰色，具有淡色喙。小群觅食草类种子，常见于林缘附近高草地中。与许多Sporophila食籽雀一样，受到笼鸟贸易捕获和牧场转换造成的栖息地丧失的影响。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway