Brown Rat vs Flightless Cormorant

Rattus norvegicus compared with Phalacrocorax harrisi

Key Differences

• Brown Rat is Least Concern while Flightless Cormorant is Vulnerable.

Taxonomic Classification

Rank	Brown Rat	Flightless Cormorant
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Suliformes (Suliformes)
Family	Muridae (Mice & Rats)	Phalacrocoracidae
Genus	Rattus	Phalacrocorax
Species	Rattus norvegicus	Phalacrocorax harrisi

Evolutionary Relationship

Brown Rat and Flightless Cormorant share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Flightless Cormorant

VU — Vulnerable

Physical Characteristics

Attribute	Brown Rat	Flightless Cormorant
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).

Flightless Cormorant

Habitat

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

Range

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

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 2 countries:

🇪🇨 Ecuador 🇳🇴 Norway