Lesser Noctule vs Ruff

Nyctalus leisleri compared with Calidris pugnax

Key Differences

• Lesser Noctule is Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Ruff
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Chiroptera (翼手目)	Charadriiformes (鸻形目)
Family	Vespertilionidae	Scolopacidae
Genus	Nyctalus	Calidris
Species	Nyctalus leisleri	Calidris pugnax

Evolutionary Relationship

Lesser Noctule and Ruff share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Lesser Noctule

EN — Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Ruff
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.

Ruff

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

流苏鹬（Calidris pugnax）在IUCN红色名录中被列为无危（LC）。在其分布范围内广泛分布且数量丰富，种群稳定，无迫切保护忧虑。

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden