Brown birch slender vs Noctule

Parornix betulae compared with Nyctalus noctula

Key Differences

• Brown birch slender is Least Concern while Noctule is Vulnerable.

Taxonomic Classification

Rank	Brown birch slender	Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Lepidoptera (Butterflies & Moths)	Chiroptera (Bats)
Family	Gracillariidae	Vespertilionidae
Genus	Parornix	Nyctalus
Species	Parornix betulae	Nyctalus noctula

Evolutionary Relationship

Brown birch slender and Noctule share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brown birch slender

LC — Least Concern

Noctule

VU — Vulnerable

Physical Characteristics

Attribute	Brown birch slender	Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown birch slender

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Japan), Europe (5 countries), and North America (Canada).

Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown birch slender

The Brown Birch Slender (Parornix betulae) is a species in the genus Parornix. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Noctule

Noctule (Nyctalus noctula) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden