Pallas's squirrel, Red-bellied tree squirrel vs Royal Tern

Callosciurus erythraeus compared with Thalasseus maximus

Key Differences

• Pallas's squirrel, Red-bellied tree squirrel is Not Evaluated while Royal Tern is Least Concern.

Taxonomic Classification

Rank	Pallas's squirrel, Red-bellied tree squirrel	Royal Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Charadriiformes (Charadriiformes)
Family	Sciuridae (Squirrels)	Laridae
Genus	Callosciurus	Thalasseus
Species	Callosciurus erythraeus	Thalasseus maximus

Evolutionary Relationship

Pallas's squirrel, Red-bellied tree squirrel and Royal Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Pallas's squirrel, Red-bellied tree squirrel

NE — Not Evaluated

Royal Tern

LC — Least Concern

Physical Characteristics

Attribute	Pallas's squirrel, Red-bellied tree squirrel	Royal Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pallas's squirrel, Red-bellied tree squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (China, Japan), Europe (8 countries), and South America (Argentina).

Royal Tern

Habitat

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

Range

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

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden