Haviside s Dolphin vs Redhead

Cephalorhynchus heavisidii compared with Aythya americana

Key Differences

• Haviside s Dolphin is Near Threatened while Redhead is Not Evaluated.

Taxonomic Classification

Rank	Haviside s Dolphin	Redhead
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	Cephalorhynchus	Aythya
Species	Cephalorhynchus heavisidii	Aythya americana

Evolutionary Relationship

Haviside s Dolphin and Redhead share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Haviside s Dolphin

NT — Near Threatened

Redhead

NE — Not Evaluated

Physical Characteristics

Attribute	Haviside s Dolphin	Redhead
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Haviside s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Redhead

Habitat

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

Range

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

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.