Brown Rat vs Island Scrub-Jay

Rattus norvegicus compared with Aphelocoma insularis

Key Differences

• Brown Rat is Least Concern while Island Scrub-Jay is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Island Scrub-Jay
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Passeriformes (Songbirds)
Family	Muridae (Mice & Rats)	Corvidae (Crows & Ravens)
Genus	Rattus	Aphelocoma
Species	Rattus norvegicus	Aphelocoma insularis

Evolutionary Relationship

Brown Rat and Island Scrub-Jay share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Island Scrub-Jay

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Island Scrub-Jay
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Island Scrub-Jay

Habitat

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

Range

Found in Norway.

Brown Rat

Brown Rat (Rattus norvegicus) 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 1 countries:

🇳🇴 Norway