Irrawaddy dolphin vs Red-breasted Merganser

Orcaella brevirostris compared with Mergus serrator

Key Differences

• Irrawaddy dolphin is Endangered while Red-breasted Merganser is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Red-breasted Merganser
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	Orcaella	Mergus
Species	Orcaella brevirostris	Mergus serrator

Evolutionary Relationship

Irrawaddy dolphin and Red-breasted Merganser share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Red-breasted Merganser

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Red-breasted Merganser
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Red-breasted Merganser

Habitat

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

Range

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

Red-breasted Merganser

Red-breasted Merganser (Mergus serrator) 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.