Chestnut-backed Chickadee vs Lesser Noctule

Poecile rufescens compared with Nyctalus leisleri

Key Differences

• Chestnut-backed Chickadee is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Chestnut-backed Chickadee	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	Paridae	Vespertilionidae
Genus	Poecile	Nyctalus
Species	Poecile rufescens	Nyctalus leisleri

Evolutionary Relationship

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

Conservation Status

Chestnut-backed Chickadee

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Chestnut-backed Chickadee	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut-backed Chickadee

Habitat

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

Range

Found in Norway.

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.

Chestnut-backed Chickadee

The Chestnut-backed Chickadee (Poecile rufescens) is a species in the genus Poecile. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.