Blue-and-yellow Macaw vs Common Tern

Ara ararauna compared with Sterna hirundo

Key Differences

• Blue-and-yellow Macaw is Least Concern while Common Tern is Endangered.

Taxonomic Classification

Rank	Blue-and-yellow Macaw	Common Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Psittaciformes (Parrots)	Charadriiformes (Charadriiformes)
Family	Psittacidae (True Parrots)	Laridae
Genus	Ara (Macaws)	Sterna
Species	Ara ararauna	Sterna hirundo

Evolutionary Relationship

Blue-and-yellow Macaw and Common Tern share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Blue-and-yellow Macaw

LC — Least Concern

Common Tern

EN — Endangered

Physical Characteristics

Attribute	Blue-and-yellow Macaw	Common Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue-and-yellow Macaw

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Common Tern

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.

Blue-and-yellow Macaw

One of the most striking and widely kept macaw species, blue-and-yellow macaws display brilliant cobalt blue upper parts contrasting with vivid yellow underparts and green forehead. They inhabit forest, woodland, and savanna from eastern Panama through Venezuela, Brazil, and Bolivia to Peru and Ecuador. Highly intelligent, they live in pairs or small flocks, feeding on palm nuts, seeds, and fruit. Popular in aviculture for over 400 years, they can live 80+ years in captivity.

Common Tern

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.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway 🇺🇸 United States 🇻🇪 Venezuela