Black-headed Gull vs Chestnut-winged Hookbill

Chroicocephalus ridibundus compared with Ancistrops strigilatus

Key Differences

• Black-headed Gull is Vulnerable while Chestnut-winged Hookbill is Least Concern.

Taxonomic Classification

Rank	Black-headed Gull	Chestnut-winged Hookbill
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Charadriiformes (Charadriiformes)	Passeriformes (Songbirds)
Family	Laridae	Furnariidae
Genus	Chroicocephalus	Ancistrops
Species	Chroicocephalus ridibundus	Ancistrops strigilatus

Evolutionary Relationship

Black-headed Gull and Chestnut-winged Hookbill share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Black-headed Gull

VU — Vulnerable

Chestnut-winged Hookbill

LC — Least Concern

Physical Characteristics

Attribute	Black-headed Gull	Chestnut-winged Hookbill
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Gull

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Chestnut-winged Hookbill

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

Black-headed Gull

Black-headed Gull (Chroicocephalus ridibundus) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

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.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇳🇴 Norway