Elegant Tern vs Red-billed Duck

Thalasseus elegans compared with Anas erythrorhyncha

Key Differences

• Elegant Tern is Near Threatened while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Elegant Tern	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Charadriiformes (Charadriiformes)	Anseriformes (Anseriformes)
Family	Laridae	Anatidae
Genus	Thalasseus	Anas
Species	Thalasseus elegans	Anas erythrorhyncha

Evolutionary Relationship

Elegant Tern and Red-billed Duck share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Elegant Tern

NT — Near Threatened

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Elegant Tern	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Elegant Tern

Habitat

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

Range

Distributed across Belgium, Colombia, Denmark, Ecuador, and Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Red-billed Duck

Habitat

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

Range

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

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.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇪🇨 Ecuador 🇳🇴 Norway