koala vs Stejneger's Scoter

Phascolarctos cinereus compared with Melanitta stejnegeri

Key Differences

• koala is Vulnerable while Stejneger's Scoter is Not Evaluated.

Taxonomic Classification

Rank	koala	Stejneger's Scoter
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	Diprotodontia (雙門齒目)	Anseriformes (雁形目)
Family	Phascolarctidae (Koalas)	Anatidae
Genus	Phascolarctos (Koalas)	Melanitta
Species	Phascolarctos cinereus	Melanitta stejnegeri

Evolutionary Relationship

koala and Stejneger's Scoter share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Stejneger's Scoter

NE — Not Evaluated

Physical Characteristics

Attribute	koala	Stejneger's Scoter
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Stejneger's Scoter

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。