Kleiner Abendsegler vs Niceforo Maria’s Oldfield Mouse

Nyctalus leisleri compared with Thomasomys nicefori

Key Differences

• Kleiner Abendsegler is Endangered while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Kleiner Abendsegler	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Chiroptera (Fledertiere)	Rodentia (Nagetiere)
Family	Vespertilionidae	Cricetidae
Genus	Nyctalus	Thomasomys
Species	Nyctalus leisleri	Thomasomys nicefori

Evolutionary Relationship

Kleiner Abendsegler and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Class level: Mammalia. (Säugetiere)

Conservation Status

Kleiner Abendsegler

EN — Endangered

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Kleiner Abendsegler	Niceforo Maria’s Oldfield Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kleiner Abendsegler

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as 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.