a bird flea vs Polar bear

Ceratophyllus rossittensis compared with Ursus maritimus

Key Differences

a bird flea is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	a bird flea	Polar bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Arthropoda (節足動物)	Chordata (脊索動物)
Class	Insecta (昆虫)	Mammalia (哺乳類)
Order	Siphonaptera (ノミ)	Carnivora (ネコ目)
Family	Ceratophyllidae	Ursidae (Bears)
Genus	Ceratophyllus	Ursus (Bears)
Species	Ceratophyllus rossittensis	Ursus maritimus

Evolutionary Relationship

a bird flea and Polar bear share a common ancestor at the Kingdom level: Animalia. (動物)

表示 Kingdom: Animalia

Conservation Status

a bird flea

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	a bird flea	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

a bird flea

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, and Sweden.

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.

a bird flea

The a bird flea (Ceratophyllus rossittensis) is a species in the genus Ceratophyllus. It is not yet evaluated on the IUCN Red List. It is found across Denmark, Norway, and Sweden, inhabiting diverse terrestrial and freshwater habitats.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。