Alston s Cotton Rat vs Grasshopper Sparrow

Sigmodon alstoni compared with Ammodramus savannarum

Key Differences

Alston s Cotton Rat is Least Concern while Grasshopper Sparrow is Critically Endangered.

Taxonomic Classification

Rank	Alston s Cotton Rat	Grasshopper Sparrow
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Passeriformes (Songbirds)
Family	Cricetidae	Passerellidae
Genus	Sigmodon	Ammodramus
Species	Sigmodon alstoni	Ammodramus savannarum

Evolutionary Relationship

Alston s Cotton Rat and Grasshopper Sparrow share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Alston s Cotton Rat

LC — Least Concern

Grasshopper Sparrow

CR — Critically Endangered

Physical Characteristics

Attribute	Alston s Cotton Rat	Grasshopper Sparrow
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alston s Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Grasshopper Sparrow

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Ecuador, Norway, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alston s Cotton Rat

The Alston s Cotton Rat (Sigmodon alstoni) is a species in the genus Sigmodon. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems. Distributed across Colombia and Venezuela.