Black-headed Gull vs Slender-billed Gull

Chroicocephalus ridibundus compared with Chroicocephalus genei

Key Differences

• Black-headed Gull is Vulnerable while Slender-billed Gull is Not Evaluated.

Taxonomic Classification

Rank	Black-headed Gull	Slender-billed Gull
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Aves (새)	Aves (새)
Order same	Charadriiformes (도요목)	Charadriiformes (도요목)
Family same	Laridae	Laridae
Genus same	Chroicocephalus	Chroicocephalus
Species	Chroicocephalus ridibundus	Chroicocephalus genei

Evolutionary Relationship

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

Conservation Status

Black-headed Gull

VU — Vulnerable

Slender-billed Gull

NE — Not Evaluated

Physical Characteristics

Attribute	Black-headed Gull	Slender-billed Gull
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.

Slender-billed Gull

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Taiwan.

Black-headed Gull

Black-headed Gull(Chroicocephalus ridibundus)은(는) IUCN 적색목록에서 취약종(VU)으로 분류됩니다. 야생에서 높은 위협에 처해 있으며, 개체군이 감소하고 서식지 압박이 증가하고 있습니다.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan