Flat Periwinkle vs ニシオオヨシキリ

Littorina obtusata compared with Acrocephalus arundinaceus

Key Differences

• Flat Periwinkle is Least Concern while ニシオオヨシキリ is Critically Endangered.

Taxonomic Classification

Rank	Flat Periwinkle	ニシオオヨシキリ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Gastropoda (腹足綱)	Aves (鳥類)
Order	Littorinimorpha (タマキビガイ下目)	Passeriformes (スズメ目)
Family	Littorinidae	Acrocephalidae
Genus	Littorina	Acrocephalus
Species	Littorina obtusata	Acrocephalus arundinaceus

Evolutionary Relationship

Flat Periwinkle and ニシオオヨシキリ share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Flat Periwinkle

LC — Least Concern

ニシオオヨシキリ

CR — Critically Endangered

Physical Characteristics

Attribute	Flat Periwinkle	ニシオオヨシキリ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Flat Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

ニシオオヨシキリ

Habitat

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

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

ニシオオヨシキリ

オオヨシキリ（Acrocephalus arundinaceus）はIUCNレッドリストで絶滅危惧IA類（CR）に分類されています。深刻な個体群減少と生息地の喪失により、野生での絶滅リスクが極めて高い状況です。

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden