Japanese Weasel vs Ruddy Duck

Mustela itatsi compared with Oxyura jamaicensis

Key Differences

• Japanese Weasel is Near Threatened while Ruddy Duck is Least Concern.

Taxonomic Classification

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

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Ruddy Duck

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Ruddy Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Ruddy Duck

Habitat

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

Range

Widely distributed across Africa (Algeria, Tunisia), Asia (Azerbaijan, Israel, Turkey), Europe (19 countries), North America (United States), and South America (Colombia, Ecuador).

Ruddy Duck

Ruddy Duck (Oxyura jamaicensis) 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.