Japanese Weasel vs Willet

Mustela itatsi compared with Tringa semipalmata

Key Differences

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

Taxonomic Classification

Rank	Japanese Weasel	Willet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Charadriiformes (Charadriiformes)
Family	Mustelidae (Weasels & Otters)	Scolopacidae
Genus	Mustela	Tringa
Species	Mustela itatsi	Tringa semipalmata

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Willet

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Willet
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.

Willet

Habitat

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

Range

Widely distributed across Europe (Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Willet

Willet (Tringa semipalmata) 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.