Royal Tern vs Sandwich Tern

Thalasseus maximus compared with Thalasseus sandvicensis

Taxonomic Classification

Rank	Royal Tern	Sandwich Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order same	Charadriiformes (Charadriiformes)	Charadriiformes (Charadriiformes)
Family same	Laridae	Laridae
Genus same	Thalasseus	Thalasseus
Species	Thalasseus maximus	Thalasseus sandvicensis

Evolutionary Relationship

Royal Tern and Sandwich Tern share a common ancestor at the Genus level: Thalasseus.

Conservation Status

Royal Tern

LC — Least Concern

Sandwich Tern

LC — Least Concern

Physical Characteristics

Attribute	Royal Tern	Sandwich Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Royal Tern

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, Sweden, and Venezuela.

Sandwich Tern

Habitat

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

Range

Found across Europe (4 countries) and South America (Colombia, Ecuador, Venezuela).

Royal Tern

Royal Tern (Thalasseus maximus) 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.

Sandwich Tern

Sandwich Tern (Thalasseus sandvicensis) 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 5 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway 🇸🇪 Sweden 🇻🇪 Venezuela