Laysan Duck vs Royal Tern

Anas laysanensis compared with Thalasseus maximus

Key Differences

Laysan Duck is Critically Endangered while Royal Tern is Least Concern.

Taxonomic Classification

Rank	Laysan Duck	Royal Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Anseriformes (Anseriformes)	Charadriiformes (Charadriiformes)
Family	Anatidae	Laridae
Genus	Anas	Thalasseus
Species	Anas laysanensis	Thalasseus maximus

Evolutionary Relationship

Laysan Duck and Royal Tern share a common ancestor at the Class level: Aves. (Birds)

View Class: Aves

Conservation Status

Laysan Duck

CR — Critically Endangered

Royal Tern

LC — Least Concern

Physical Characteristics

Attribute	Laysan Duck	Royal Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Royal Tern

Habitat

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

Range

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

Laysan Duck

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.

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.