Greater Scaup vs Lesser Scaup

Aythya marila compared with Aythya affinis

Key Differences

• Greater Scaup is Vulnerable while Lesser Scaup is Least Concern.

Taxonomic Classification

Rank	Greater Scaup	Lesser Scaup
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Aves (새)	Aves (새)
Order same	Anseriformes (기러기목)	Anseriformes (기러기목)
Family same	Anatidae	Anatidae
Genus same	Aythya	Aythya
Species	Aythya marila	Aythya affinis

Evolutionary Relationship

Greater Scaup and Lesser Scaup share a common ancestor at the Genus level: Aythya.

Conservation Status

Greater Scaup

VU — Vulnerable

Lesser Scaup

LC — Least Concern

Physical Characteristics

Attribute	Greater Scaup	Lesser Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Greater Scaup

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Scaup

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Greater Scaup

흰뺨오리(Aythya marila)는 IUCN 적색목록에서 취약종(VU)으로 분류됩니다. 개체군이 감소하고 서식지 압박이 증가하면서 야생에서의 위기 위험이 높습니다.

Lesser Scaup

작은흰죽지(Aythya affinis)는 IUCN 적색목록에서 관심 필요(LC) 등급으로 분류됩니다. 분포 범위 전체에 걸쳐 널리 분포하며 개체수가 풍부하고 안정적이어서 즉각적인 보전 우려가 없습니다.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States