キノドアオジ vs Polar bear

Emberiza cineracea compared with Ursus maritimus

Key Differences

キノドアオジ is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	キノドアオジ	Polar bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Aves (鳥類)	Mammalia (哺乳類)
Order	Passeriformes (スズメ目)	Carnivora (ネコ目)
Family	Emberizidae	Ursidae (Bears)
Genus	Emberiza	Ursus (Bears)
Species	Emberiza cineracea	Ursus maritimus

Evolutionary Relationship

キノドアオジ and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

キノドアオジ

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	キノドアオジ	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

キノドアオジ

Habitat

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

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.

キノドアオジ

The cinereous bunting (Emberiza cineracea) is a small passerine bird in the family Emberizidae, with a breeding range centered on Turkey, the Greek Aegean islands, and parts of the eastern Mediterranean and Middle East. It breeds primarily on arid, rocky hillsides and sparse scrub at low to moderate elevations, and winters in the Arabian Peninsula, northeastern Africa, and the Middle East. The male is a distinctive pale gray-yellow bird with a streaked brown back and yellow-tinged head, while females are more streaked and less colorful. The species favors dry, open habitats with sparse vegetation, often nesting on the ground or in low scrub. The cinereous bunting is classified as Not Evaluated by the IUCN in some assessments, though it has also been assessed as Least Concern in others, reflecting a small to moderate global population concentrated in the eastern Mediterranean and Turkey. It is entirely absent from Norway; any such database record is an artifact of data entry error. Like other buntings, it feeds primarily on seeds outside the breeding season and takes invertebrates during nesting. Habitat loss in its breeding range, particularly degradation of traditional dry-land farming and grazing landscapes in Turkey and Greece, represents the primary conservation concern.

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。