栗腹文鸟 vs Polar bear

Lonchura atricapilla compared with Ursus maritimus

Key Differences

• 栗腹文鸟 is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	栗腹文鸟	Polar bear
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	Aves (鳥綱)	Mammalia (哺乳動物)
Order	Passeriformes (雀形目)	Carnivora (食肉目)
Family	Estrildidae	Ursidae (Bears)
Genus	Lonchura	Ursus (Bears)
Species	Lonchura atricapilla	Ursus maritimus

Evolutionary Relationship

栗腹文鸟 and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

栗腹文鸟

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	栗腹文鸟	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

栗腹文鸟

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Indonesia, Japan, United Arab Emirates), Europe (Norway, United Kingdom), North America (Haiti, Jamaica, United States), and South America (Colombia, Ecuador).

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.

栗腹文鸟

栗腹文鸟是一种小型粗壮的梅花雀，具有浓郁栗棕色羽毛、黑色头部和白色腹部，栖息于从印度、斯里兰卡向东经东南亚至菲律宾和台湾的草地、稻田和开放林缘。高度群居，形成大型鸟群，有时被认为是稻田的轻微农业害鸟。在亚洲各地广泛作为笼养鸟，繁殖和饲养相对容易。

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。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway