Greater Scaup vs Redhead

Aythya marila compared with Aythya americana

Key Differences

• Greater Scaup is Vulnerable while Redhead is Not Evaluated.

Taxonomic Classification

Rank	Greater Scaup	Redhead
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Aves (chim)	Aves (chim)
Order same	Anseriformes (bộ Ngỗng)	Anseriformes (bộ Ngỗng)
Family same	Anatidae	Anatidae
Genus same	Aythya	Aythya
Species	Aythya marila	Aythya americana

Evolutionary Relationship

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

Conservation Status

Greater Scaup

VU — Vulnerable

Redhead

NE — Not Evaluated

Physical Characteristics

Attribute	Greater Scaup	Redhead
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.

Redhead

Habitat

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

Range

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

Greater Scaup

Greater Scaup (Aythya marila) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

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