Gray-backed Tern vs Pacific Spiny-rat

Onychoprion lunatus compared with Proechimys decumanus

Key Differences

• Gray-backed Tern is Least Concern while Pacific Spiny-rat is Near Threatened.

Taxonomic Classification

Rank	Gray-backed Tern	Pacific Spiny-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	Echimyidae
Genus	Onychoprion	Proechimys
Species	Onychoprion lunatus	Proechimys decumanus

Evolutionary Relationship

Gray-backed Tern and Pacific Spiny-rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-backed Tern

LC — Least Concern

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

Attribute	Gray-backed Tern	Pacific Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-backed Tern

Habitat

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

Range

Found in Norway.

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.