Asian Openbill vs Lesser Scaup

Anastomus oscitans compared with Aythya affinis

Taxonomic Classification

Rank	Asian Openbill	Lesser Scaup
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Ciconiiformes (Ciconiiformes)	Anseriformes (Anseriformes)
Family	Ciconiidae	Anatidae
Genus	Anastomus	Aythya
Species	Anastomus oscitans	Aythya affinis

Evolutionary Relationship

Asian Openbill and Lesser Scaup share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Asian Openbill

LC — Least Concern

Lesser Scaup

LC — Least Concern

Physical Characteristics

Attribute	Asian Openbill	Lesser Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Asian Openbill

Habitat

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

Range

Found in Norway.

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).

Asian Openbill

The Asian Openbill (Anastomus oscitans) is a species in the genus Anastomus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments. Found in Norway.

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 1 countries:

🇳🇴 Norway