Lesser Noctule vs Red-breasted Merganser

Nyctalus leisleri compared with Mergus serrator

Key Differences

• Lesser Noctule is Endangered while Red-breasted Merganser is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Red-breasted Merganser
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Mammalia (memeliler)	Aves (kuş)
Order	Chiroptera (yarasa)	Anseriformes (Kazsılar)
Family	Vespertilionidae	Anatidae
Genus	Nyctalus	Mergus
Species	Nyctalus leisleri	Mergus serrator

Evolutionary Relationship

Lesser Noctule and Red-breasted Merganser share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Conservation Status

Lesser Noctule

EN — Endangered

Red-breasted Merganser

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Red-breasted Merganser
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.

Red-breasted Merganser

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Colombia).

Red-breasted Merganser

Red-breasted Merganser (Mergus serrator) 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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden 🇺🇦 Ukraine