美洲瓣蹼雞 vs Polar bear

Fulica americana compared with Ursus maritimus

Key Differences

• 美洲瓣蹼雞 is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	美洲瓣蹼雞	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	Gruiformes (鹤形目)	Carnivora (食肉目)
Family	Rallidae	Ursidae (Bears)
Genus	Fulica	Ursus (Bears)
Species	Fulica americana	Ursus maritimus

Evolutionary Relationship

美洲瓣蹼雞 and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

美洲瓣蹼雞

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	美洲瓣蹼雞	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

美洲瓣蹼雞

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Europe (Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

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.

美洲瓣蹼雞

美洲骨顶（Fulica americana）在IUCN红色名录中被评估为无危（LC），是北美洲最常见的水鸟之一，广泛分布于各类淡水湖泊、池塘和沼泽中。该物种以全身黑色的羽毛和醒目的白色喙及额甲为识别特征，善于游泳和潜水，但并不属于真正的鸭类，而属于秧鸡科。骨顶在城市公园的水体中与人类共存，适应能力极强。

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