Lesser Scaup vs Little Black Serotine

Aythya affinis compared with Eptesicus andinus

Taxonomic Classification

Rank	Lesser Scaup	Little Black Serotine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Chiroptera (Bats)
Family	Anatidae	Vespertilionidae
Genus	Aythya	Eptesicus
Species	Aythya affinis	Eptesicus andinus

Evolutionary Relationship

Lesser Scaup and Little Black Serotine share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Scaup

LC — Least Concern

Little Black Serotine

LC — Least Concern

Physical Characteristics

Attribute	Lesser Scaup	Little Black Serotine
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Scaup

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, Ecuador, Venezuela).

Little Black Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Lesser Scaup

Lesser Scaup (Aythya affinis) 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 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela