Andean Gull vs Black-headed Gull

Chroicocephalus serranus compared with Chroicocephalus ridibundus

Key Differences

• Andean Gull is Least Concern while Black-headed Gull is Vulnerable.

Taxonomic Classification

Rank	Andean Gull	Black-headed Gull
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class same	Aves (طيور)	Aves (طيور)
Order same	Charadriiformes (إفجيجيات)	Charadriiformes (إفجيجيات)
Family same	Laridae	Laridae
Genus same	Chroicocephalus	Chroicocephalus
Species	Chroicocephalus serranus	Chroicocephalus ridibundus

Evolutionary Relationship

Andean Gull and Black-headed Gull share a common ancestor at the Genus level: Chroicocephalus.

Conservation Status

Andean Gull

LC — Least Concern

Black-headed Gull

VU — Vulnerable

Physical Characteristics

Attribute	Andean Gull	Black-headed Gull
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Andean Gull

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

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.

Andean Gull

The Andean Gull (Chroicocephalus serranus) is a species in the genus Chroicocephalus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇳🇴 Norway