Red-billed Duck vs smooth giant clam

Anas erythrorhyncha compared with Tridacna derasa

Key Differences

• Red-billed Duck is Least Concern while smooth giant clam is Vulnerable.

Taxonomic Classification

Rank	Red-billed Duck	smooth giant clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Anseriformes (Anseriformes)	Cardiida (Cardiida)
Family	Anatidae	Cardiidae
Genus	Anas	Tridacna
Species	Anas erythrorhyncha	Tridacna derasa

Evolutionary Relationship

Red-billed Duck and smooth giant clam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Red-billed Duck

LC — Least Concern

smooth giant clam

VU — Vulnerable

Physical Characteristics

Attribute	Red-billed Duck	smooth giant clam
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).

smooth giant clam

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Marshall Islands and Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.