Alston s Cotton Rat vs 來珊鴨

Sigmodon alstoni compared with Anas laysanensis

Key Differences

• Alston s Cotton Rat is Least Concern while 來珊鴨 is Critically Endangered.

Taxonomic Classification

Rank	Alston s Cotton Rat	來珊鴨
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Rodentia (啮齿目)	Anseriformes (雁形目)
Family	Cricetidae	Anatidae
Genus	Sigmodon	Anas
Species	Sigmodon alstoni	Anas laysanensis

Evolutionary Relationship

Alston s Cotton Rat and 來珊鴨 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Alston s Cotton Rat

LC — Least Concern

來珊鴨

CR — Critically Endangered

Physical Characteristics

Attribute	Alston s Cotton Rat	來珊鴨
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alston s Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.

Alston s Cotton Rat

The Alston s Cotton Rat (Sigmodon alstoni) is a species in the genus Sigmodon. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems. Distributed across Colombia and Venezuela.

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。