pato-de-laysan vs tiny risso snail

Anas laysanensis compared with Rissoa parva

Key Differences

• pato-de-laysan is Critically Endangered while tiny risso snail is Least Concern.

Taxonomic Classification

Rank	pato-de-laysan	tiny risso snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (Moluscos)
Class	Aves (ave)	Gastropoda (Gastrópodes)
Order	Anseriformes (Anseriformes)	Littorinimorpha (Littorinimorpha)
Family	Anatidae	Rissoidae
Genus	Anas	Rissoa
Species	Anas laysanensis	Rissoa parva

Evolutionary Relationship

pato-de-laysan and tiny risso snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

pato-de-laysan

CR — Critically Endangered

tiny risso snail

LC — Least Concern

Physical Characteristics

Attribute	pato-de-laysan	tiny risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

pato-de-laysan

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.

pato-de-laysan

O Pato-de-Laysan (Anas laysanensis) está classificado como Criticamente Ameaçado (CR) na Lista Vermelha da IUCN. Enfrenta um risco extremamente alto de extinção na natureza devido ao grave declínio populacional e à perda de habitat.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway