Japanese Weasel vs Red-flanked Bluetail

Mustela itatsi compared with Tarsiger cyanurus

Key Differences

• Japanese Weasel is Near Threatened while Red-flanked Bluetail is Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Red-flanked Bluetail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Passeriformes (Songbirds)
Family	Mustelidae (Weasels & Otters)	Muscicapidae
Genus	Mustela	Tarsiger
Species	Mustela itatsi	Tarsiger cyanurus

Evolutionary Relationship

Japanese Weasel and Red-flanked Bluetail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Japanese Weasel

NT — Near Threatened

Red-flanked Bluetail

EN — Endangered

Physical Characteristics

Attribute	Japanese Weasel	Red-flanked Bluetail
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.

Red-flanked Bluetail

Habitat

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

Range

Found across Europe (8 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-flanked Bluetail

Red-flanked Bluetail (Tarsiger cyanurus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.