Red-billed Duck vs Stone Crayfish

Anas erythrorhyncha compared with Austropotamobius torrentium

Key Differences

• Red-billed Duck is Least Concern while Stone Crayfish is Data Deficient.

Taxonomic Classification

Rank	Red-billed Duck	Stone Crayfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Malacostraca (Crustaceans)
Order	Anseriformes (Anseriformes)	Decapoda (Decapoda)
Family	Anatidae	Astacidae
Genus	Anas	Austropotamobius
Species	Anas erythrorhyncha	Austropotamobius torrentium

Evolutionary Relationship

Red-billed Duck and Stone Crayfish share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Red-billed Duck

LC — Least Concern

Stone Crayfish

DD — Data Deficient

Physical Characteristics

Attribute	Red-billed Duck	Stone Crayfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Red-billed Duck

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Stone Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) 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.