Gadwall vs Japanese Weasel

Mareca strepera compared with Mustela itatsi

Key Differences

• Gadwall is Least Concern while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Gadwall	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Carnivora (Carnivorans)
Family	Anatidae	Mustelidae (Weasels & Otters)
Genus	Mareca	Mustela
Species	Mareca strepera	Mustela itatsi

Evolutionary Relationship

Gadwall and Japanese Weasel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gadwall

LC — Least Concern

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Gadwall	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gadwall

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia).

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Gadwall

Gadwall (Mareca strepera) 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.