Chestnut-collared Longspur vs Desmarest’s Spiny Pocket Mouse

Calcarius ornatus compared with Heteromys desmarestianus

Key Differences

• Chestnut-collared Longspur is Vulnerable while Desmarest’s Spiny Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	Chestnut-collared Longspur	Desmarest’s Spiny Pocket Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Rodentia (Rodents)
Family	Calcariidae	Heteromyidae
Genus	Calcarius	Heteromys
Species	Calcarius ornatus	Heteromys desmarestianus

Evolutionary Relationship

Chestnut-collared Longspur and Desmarest’s Spiny Pocket Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Chestnut-collared Longspur

VU — Vulnerable

Desmarest’s Spiny Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	Chestnut-collared Longspur	Desmarest’s Spiny Pocket Mouse
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.

Desmarest’s Spiny Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

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.