Lesser Scaup vs Redhead

Aythya affinis compared with Aythya americana

Key Differences

• Lesser Scaup is Least Concern while Redhead is Not Evaluated.

Taxonomic Classification

Rank	Lesser Scaup	Redhead
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class same	Aves (kuş)	Aves (kuş)
Order same	Anseriformes (Kazsılar)	Anseriformes (Kazsılar)
Family same	Anatidae	Anatidae
Genus same	Aythya	Aythya
Species	Aythya affinis	Aythya americana

Evolutionary Relationship

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

Conservation Status

Lesser Scaup

LC — Least Concern

Redhead

NE — Not Evaluated

Physical Characteristics

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

Habitat & Geographic 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).

Redhead

Habitat

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

Range

Found across Europe (7 countries) and North America (United States).

Lesser Scaup

Lesser Scaup (Aythya affinis) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Redhead

Redhead (Aythya americana) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States