Lesser Crested Tern vs Red-billed Duck

Thalasseus bengalensis compared with Anas erythrorhyncha

Key Differences

• Lesser Crested Tern is Not Evaluated while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Lesser Crested 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 bengalensis	Anas erythrorhyncha

Evolutionary Relationship

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

Conservation Status

Lesser Crested Tern

NE — Not Evaluated

Red-billed Duck

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Lesser Crested Tern

Habitat

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

Range

Distributed across Norway and Sweden.

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 1 countries:

🇳🇴 Norway