Chestnut-collared Longspur vs Olive-gray Thomasomys

Calcarius ornatus compared with Thomasomys cinereus

Key Differences

• Chestnut-collared Longspur is Vulnerable while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	Chestnut-collared Longspur	Olive-gray Thomasomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Rodentia (Rodents)
Family	Calcariidae	Cricetidae
Genus	Calcarius	Thomasomys
Species	Calcarius ornatus	Thomasomys cinereus

Evolutionary Relationship

Chestnut-collared Longspur and Olive-gray Thomasomys share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Chestnut-collared Longspur

VU — Vulnerable

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	Chestnut-collared Longspur	Olive-gray Thomasomys
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.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

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.