Javan Rusa vs Lesser Scaup

Rusa timorensis compared with Aythya affinis

Key Differences

• Javan Rusa is Vulnerable while Lesser Scaup is Least Concern.

Taxonomic Classification

Rank	Javan Rusa	Lesser Scaup
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Artiodactyla (Even-toed Ungulates)	Anseriformes (Anseriformes)
Family	Cervidae (Deer)	Anatidae
Genus	Rusa	Aythya
Species	Rusa timorensis	Aythya affinis

Evolutionary Relationship

Javan Rusa and Lesser Scaup share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Javan Rusa

VU — Vulnerable

Lesser Scaup

LC — Least Concern

Physical Characteristics

Attribute	Javan Rusa	Lesser Scaup
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Javan Rusa

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests spanning the Australasia and Afrotropic and Oceanian realms.

Range

Distributed across Mauritius, New Zealand, and Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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).

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