Blue Dolphin vs Ferruginous Duck

Stenella coeruleoalba compared with Aythya nyroca

Key Differences

• Blue Dolphin is Least Concern while Ferruginous Duck is Not Evaluated.

Taxonomic Classification

Rank	Blue Dolphin	Ferruginous Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Anseriformes (Anseriformes)
Family	Delphinidae (Oceanic Dolphins)	Anatidae
Genus	Stenella	Aythya
Species	Stenella coeruleoalba	Aythya nyroca

Evolutionary Relationship

Blue Dolphin and Ferruginous Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Blue Dolphin

LC — Least Concern

Ferruginous Duck

NE — Not Evaluated

Physical Characteristics

Attribute	Blue Dolphin	Ferruginous Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela).

Ferruginous Duck

Habitat

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

Range

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

Blue Dolphin

Blue Dolphin (Stenella coeruleoalba) 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.

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.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan