Chinese Crested Tern vs Polynesian rat

Thalasseus bernsteini compared with Rattus exulans

Key Differences

Chinese Crested Tern is Critically Endangered while Polynesian rat is Least Concern.

Taxonomic Classification

Rank	Chinese Crested Tern	Polynesian rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Charadriiformes (Charadriiformes)	Rodentia (Rodents)
Family	Laridae	Muridae (Mice & Rats)
Genus	Thalasseus	Rattus
Species	Thalasseus bernsteini	Rattus exulans

Evolutionary Relationship

Chinese Crested Tern and Polynesian rat share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Chinese Crested Tern

CR — Critically Endangered

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	Chinese Crested Tern	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chinese Crested Tern

Habitat

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

Range

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

Polynesian rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (6 countries), Europe (United Kingdom), North America (United States), Oceania and the Pacific (11 countries), and South America (Chile).

Chinese Crested Tern

The Chinese Crested Tern (Thalasseus bernsteini) is a species in the genus Thalasseus. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.