Ferruginous Duck vs Greater Scaup

Aythya nyroca compared with Aythya marila

Key Differences

• Ferruginous Duck is Not Evaluated while Greater Scaup is Vulnerable.

Taxonomic Classification

Rank	Ferruginous Duck	Greater Scaup
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 nyroca	Aythya marila

Evolutionary Relationship

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

Conservation Status

Ferruginous Duck

NE — Not Evaluated

Greater Scaup

VU — Vulnerable

Physical Characteristics

Attribute	Ferruginous Duck	Greater Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ferruginous Duck

Habitat

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

Range

Found across Asia (Taiwan) and Europe (8 countries).

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.

Ferruginous Duck

Ferruginous Duck (Aythya nyroca) 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.

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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden