Lesser Noctule vs Olive-backed Tailorbird

Nyctalus leisleri compared with Orthotomus sepium

Key Differences

• Lesser Noctule is Endangered while Olive-backed Tailorbird is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Olive-backed Tailorbird
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Passeriformes (Songbirds)
Family	Vespertilionidae	Cisticolidae
Genus	Nyctalus	Orthotomus
Species	Nyctalus leisleri	Orthotomus sepium

Evolutionary Relationship

Lesser Noctule and Olive-backed Tailorbird share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Noctule

EN — Endangered

Olive-backed Tailorbird

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Olive-backed Tailorbird
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.

Olive-backed Tailorbird

Habitat

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

Range

Found in Norway.