Chestnut-winged Hookbill vs Common Tern

Ancistrops strigilatus compared with Sterna hirundo

Key Differences

• Chestnut-winged Hookbill is Least Concern while Common Tern is Endangered.

Taxonomic Classification

Rank	Chestnut-winged Hookbill	Common Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Passeriformes (Songbirds)	Charadriiformes (Charadriiformes)
Family	Furnariidae	Laridae
Genus	Ancistrops	Sterna
Species	Ancistrops strigilatus	Sterna hirundo

Evolutionary Relationship

Chestnut-winged Hookbill and Common Tern share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Chestnut-winged Hookbill

LC — Least Concern

Common Tern

EN — Endangered

Physical Characteristics

Attribute	Chestnut-winged Hookbill	Common Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut-winged Hookbill

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

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.

Chestnut-winged Hookbill

The Chestnut-winged Hookbill (Ancistrops strigilatus) is a species in the genus Ancistrops. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway