Zwergwal vs Rotkopfente

Balaenoptera acutorostrata compared with Aythya americana

Key Differences

• Zwergwal is Least Concern while Rotkopfente is Not Evaluated.

Taxonomic Classification

Rank	Zwergwal	Rotkopfente
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Aves (Vögel)
Order	Cetacea (Whales & Dolphins)	Anseriformes (Gänsevögel)
Family	Balaenopteridae (Rorquals)	Anatidae
Genus	Balaenoptera (Rorquals)	Aythya
Species	Balaenoptera acutorostrata	Aythya americana

Evolutionary Relationship

Zwergwal and Rotkopfente share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Zwergwal

LC — Least Concern

Rotkopfente

NE — Not Evaluated

Physical Characteristics

Attribute	Zwergwal	Rotkopfente
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Zwergwal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Rotkopfente

Habitat

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

Range

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

Zwergwal

Bagwhale (Balaenoptera acutorostrata) 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.

Rotkopfente

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 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇸🇪 Sweden