Polar bear vs クビワヤマセミ

Ursus maritimus compared with Megaceryle torquata

Key Differences

  • Polar bear is Vulnerable while クビワヤマセミ is Least Concern.

Taxonomic Classification

Rank Polar bear クビワヤマセミ
Kingdom same Animalia (動物) Animalia (動物)
Phylum same Chordata (脊索動物) Chordata (脊索動物)
Class Mammalia (哺乳類) Aves (鳥類)
Order Carnivora (ネコ目) Coraciiformes (ブッポウソウ目)
Family Ursidae (Bears) Alcedinidae
Genus Ursus (Bears) Megaceryle
Species Ursus maritimus Megaceryle torquata

Evolutionary Relationship

Polar bear and クビワヤマセミ share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

クビワヤマセミ

LC — Least Concern

Physical Characteristics

Attribute Polar bear クビワヤマセミ
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.

クビワヤマセミ

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

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。

クビワヤマセミ

Ringed Kingfisher(Megaceryle torquata)は IUCN レッドリストで軽度懸念(LC)に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。

Shared Countries

Both species can be found in 1 countries:

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