Lesser Noctule vs Stygian Owl

Nyctalus leisleri compared with Asio stygius

Key Differences

• Lesser Noctule is Endangered while Stygian Owl is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Stygian Owl
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Strigiformes (Owls)
Family	Vespertilionidae	Strigidae (True Owls)
Genus	Nyctalus	Asio
Species	Nyctalus leisleri	Asio stygius

Evolutionary Relationship

Lesser Noctule and Stygian Owl share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Noctule

EN — Endangered

Stygian Owl

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Stygian Owl
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

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.

Stygian Owl

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Stygian Owl

Stygian Owl (Asio stygius) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.