來珊鴨 vs Niceforo Maria’s Oldfield Mouse

Anas laysanensis compared with Thomasomys nicefori

Key Differences

• 來珊鴨 is Critically Endangered while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	來珊鴨	Niceforo Maria’s Oldfield Mouse
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	Aves (鳥綱)	Mammalia (哺乳動物)
Order	Anseriformes (雁形目)	Rodentia (啮齿目)
Family	Anatidae	Cricetidae
Genus	Anas	Thomasomys
Species	Anas laysanensis	Thomasomys nicefori

Evolutionary Relationship

來珊鴨 and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

來珊鴨

CR — Critically Endangered

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	來珊鴨	Niceforo Maria’s Oldfield Mouse
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.

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

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。