trinta-réis-boreal / gaivina vs Patagonian Weasel

Sterna hirundo compared with Lyncodon patagonicus

Key Differences

• trinta-réis-boreal / gaivina is Endangered while Patagonian Weasel is Least Concern.

Taxonomic Classification

Rank	trinta-réis-boreal / gaivina	Patagonian Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Aves (ave)	Mammalia (mamíferos)
Order	Charadriiformes (Charadriiformes)	Carnivora (carnívoros)
Family	Laridae	Mustelidae (Weasels & Otters)
Genus	Sterna	Lyncodon
Species	Sterna hirundo	Lyncodon patagonicus

Evolutionary Relationship

trinta-réis-boreal / gaivina and Patagonian Weasel share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

trinta-réis-boreal / gaivina

EN — Endangered

Patagonian Weasel

LC — Least Concern

Physical Characteristics

Attribute	trinta-réis-boreal / gaivina	Patagonian Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

trinta-réis-boreal / gaivina

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.

Patagonian Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

trinta-réis-boreal / gaivina

O trinta-réis-comum (Sterna hirundo) está classificado como Em Perigo (EN) na Lista Vermelha da IUCN. Em alto risco de extinção na natureza, com declínio populacional significativo e ameaças contínuas à sobrevivência.