ニシオオヨシキリ vs tiny risso snail

Acrocephalus arundinaceus compared with Rissoa parva

Key Differences

• ニシオオヨシキリ is Critically Endangered while tiny risso snail is Least Concern.

Taxonomic Classification

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

Evolutionary Relationship

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

Conservation Status

ニシオオヨシキリ

CR — Critically Endangered

tiny risso snail

LC — Least Concern

Physical Characteristics

Attribute	ニシオオヨシキリ	tiny risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

tiny risso snail

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

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