Chestnut-collared Longspur vs Japanese Weasel

Calcarius ornatus compared with Mustela itatsi

Key Differences

• Chestnut-collared Longspur is Vulnerable while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Chestnut-collared Longspur	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Carnivora (Carnivorans)
Family	Calcariidae	Mustelidae (Weasels & Otters)
Genus	Calcarius	Mustela
Species	Calcarius ornatus	Mustela itatsi

Evolutionary Relationship

Chestnut-collared Longspur and Japanese Weasel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Chestnut-collared Longspur

VU — Vulnerable

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Chestnut-collared Longspur	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut-collared Longspur

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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.

Chestnut-collared Longspur

The Chestnut-collared Longspur (Calcarius ornatus) is a species in the genus Calcarius. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.