Kleiner Abendsegler vs Rostgans

Nyctalus leisleri compared with Tadorna ferruginea

Key Differences

• Kleiner Abendsegler is Endangered while Rostgans is Not Evaluated.

Taxonomic Classification

Rank	Kleiner Abendsegler	Rostgans
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Aves (Vögel)
Order	Chiroptera (Fledertiere)	Anseriformes (Gänsevögel)
Family	Vespertilionidae	Anatidae
Genus	Nyctalus	Tadorna
Species	Nyctalus leisleri	Tadorna ferruginea

Evolutionary Relationship

Kleiner Abendsegler and Rostgans share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Kleiner Abendsegler

EN — Endangered

Rostgans

NE — Not Evaluated

Physical Characteristics

Attribute	Kleiner Abendsegler	Rostgans
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kleiner Abendsegler

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.

Rostgans

Habitat

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

Range

Widely distributed across Asia (Israel, Taiwan), Europe (19 countries), and North America (United States).

Rostgans

Ruddy Shelduck (Tadorna ferruginea) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

Shared Countries

Both species can be found in 4 countries:

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