Lesser Noctule vs Olivaceous Flatbill

Nyctalus leisleri compared with Rhynchocyclus olivaceus

Key Differences

• Lesser Noctule is Endangered while Olivaceous Flatbill is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Olivaceous Flatbill
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Passeriformes (Songbirds)
Family	Vespertilionidae	Tyrannidae
Genus	Nyctalus	Rhynchocyclus
Species	Nyctalus leisleri	Rhynchocyclus olivaceus

Evolutionary Relationship

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

Conservation Status

Lesser Noctule

EN — Endangered

Olivaceous Flatbill

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Olivaceous Flatbill
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.

Olivaceous Flatbill

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.