クロワカモメ vs オオセグロカモメ

Larus delawarensis compared with Larus schistisagus

Key Differences

• クロワカモメ is Least Concern while オオセグロカモメ is Not Evaluated.

Taxonomic Classification

Rank	クロワカモメ	オオセグロカモメ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Aves (鳥類)	Aves (鳥類)
Order same	Charadriiformes (チドリ目)	Charadriiformes (チドリ目)
Family same	Laridae	Laridae
Genus same	Larus	Larus
Species	Larus delawarensis	Larus schistisagus

Evolutionary Relationship

クロワカモメ and オオセグロカモメ share a common ancestor at the Genus level: Larus.

Conservation Status

クロワカモメ

LC — Least Concern

オオセグロカモメ

NE — Not Evaluated

Physical Characteristics

Attribute	クロワカモメ	オオセグロカモメ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

クロワカモメ

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

オオセグロカモメ

Habitat

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

Range

Distributed across Norway, Sweden, Taiwan, and United States.

クロワカモメ

Ring-billed Gull（Larus delawarensis）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States