來珊鴨 vs tiny risso snail

Anas laysanensis compared with Rissoa parva

Key Differences

• 來珊鴨 is Critically Endangered while tiny risso snail is Least Concern.

Taxonomic Classification

Rank	來珊鴨	tiny risso snail
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Mollusca (软体动物门)
Class	Aves (鳥綱)	Gastropoda (腹足纲)
Order	Anseriformes (雁形目)	Littorinimorpha (滨螺形目)
Family	Anatidae	Rissoidae
Genus	Anas	Rissoa
Species	Anas laysanensis	Rissoa parva

Evolutionary Relationship

來珊鴨 and tiny risso snail share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

來珊鴨

CR — Critically Endangered

tiny risso snail

LC — Least Concern

Physical Characteristics

Attribute	來珊鴨	tiny risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

來珊鴨

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. 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.

來珊鴨

莱桑鸭（Anas laysanensis）被IUCN红色名录列为极危（CR）物种。由于种群数量严重下降和栖息地丧失，该物种在野外灭绝的风险极高。

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway