Greater Scaup vs Hotson’s Brush-tailed Mouse

Aythya marila compared with Calomyscus hotsoni

Key Differences

• Greater Scaup is Vulnerable while Hotson’s Brush-tailed Mouse is Least Concern.

Taxonomic Classification

Rank	Greater Scaup	Hotson’s Brush-tailed Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Rodentia (Rodents)
Family	Anatidae	Calomyscidae
Genus	Aythya	Calomyscus
Species	Aythya marila	Calomyscus hotsoni

Evolutionary Relationship

Greater Scaup and Hotson’s Brush-tailed Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Greater Scaup

VU — Vulnerable

Hotson’s Brush-tailed Mouse

LC — Least Concern

Physical Characteristics

Attribute	Greater Scaup	Hotson’s Brush-tailed Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Greater Scaup

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Hotson’s Brush-tailed Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Greater Scaup

Greater Scaup (Aythya marila) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.