Sterne pierregarin vs Mountain Water Rat

Sterna hirundo compared with Baiyankamys habbema

Key Differences

• Sterne pierregarin is Endangered while Mountain Water Rat is Data Deficient.

Taxonomic Classification

Rank	Sterne pierregarin	Mountain Water Rat
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (oiseau)	Mammalia (mammifères)
Order	Charadriiformes (Charadriiformes)	Rodentia (Rodents)
Family	Laridae	Muridae (Mice & Rats)
Genus	Sterna	Baiyankamys
Species	Sterna hirundo	Baiyankamys habbema

Evolutionary Relationship

Sterne pierregarin and Mountain Water Rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Sterne pierregarin

EN — Endangered

Mountain Water Rat

DD — Data Deficient

Physical Characteristics

Attribute	Sterne pierregarin	Mountain Water Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Sterne pierregarin

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Mountain Water Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Sterne pierregarin

Common Tern (Sterna hirundo) 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.