Alder Flycatcher vs Lesser Noctule

Empidonax alnorum compared with Nyctalus leisleri

Key Differences

• Alder Flycatcher is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Alder Flycatcher	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Chiroptera (Bats)
Family	Tyrannidae	Vespertilionidae
Genus	Empidonax	Nyctalus
Species	Empidonax alnorum	Nyctalus leisleri

Evolutionary Relationship

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

Conservation Status

Alder Flycatcher

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Alder Flycatcher	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder Flycatcher

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

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.

Alder Flycatcher

Alder Flycatcher (Empidonax alnorum) 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.