Polar bear vs 紅腳旋蜜雀

Ursus maritimus compared with Cyanerpes cyaneus

Key Differences

Polar bear is Vulnerable while 紅腳旋蜜雀 is Least Concern.

Taxonomic Classification

Rank	Polar bear	紅腳旋蜜雀
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)	Cyanerpes
Species	Ursus maritimus	Cyanerpes cyaneus

Evolutionary Relationship

Polar bear and 紅腳旋蜜雀 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 ↓

紅腳旋蜜雀

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	紅腳旋蜜雀
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.

紅腳旋蜜雀

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。

紅腳旋蜜雀

红腿蜜雀（Cyanerpes cyaneus）是一种与唐纳雀有关的小型色彩艳丽的吸蜜鸟，雄鸟展示鲜艳的宝蓝色羽毛和明亮的红腿——这一诊断特征为该种命名——以及细长弯曲、黄色尖端的嘴。分布于从墨西哥向南至玻利维亚、巴西及特立尼达的热带和亚热带森林冠层。用长嘴探入花朵采蜜，其嘴可进入短嘴鸟类无法到达的花朵。是热带冠层树木花朵的重要传粉者，广泛分布于新热带低地湿润森林。