Brown Rat vs Ruddy Shelduck

Rattus norvegicus compared with Tadorna ferruginea

Key Differences

• Brown Rat is Least Concern while Ruddy Shelduck is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Ruddy Shelduck
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class	Mammalia (स्तनधारी)	Aves (पक्षी)
Order	Rodentia (कृंतक)	Anseriformes (ऐन्सरीफोर्मीस)
Family	Muridae (Mice & Rats)	Anatidae
Genus	Rattus	Tadorna
Species	Rattus norvegicus	Tadorna ferruginea

Evolutionary Relationship

Brown Rat and Ruddy Shelduck share a common ancestor at the Phylum level: Chordata. (रज्जुकी)

Conservation Status

Brown Rat

LC — Least Concern

Ruddy Shelduck

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Ruddy Shelduck
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).

Ruddy Shelduck

Habitat

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

Range

Widely distributed across Asia (Israel, Taiwan), Europe (19 countries), and North America (United States).

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.

Ruddy Shelduck

Ruddy Shelduck (Tadorna ferruginea) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

Shared Countries

Both species can be found in 22 countries:

🇦🇹 Austria 🇧🇾 Belarus 🇧🇪 Belgium 🇨🇿 Czech Republic 🇩🇰 Denmark 🇪🇪 Estonia 🇫🇷 France 🇩🇪 Germany 🇮🇪 Ireland 🇮🇱 Israel 🇱🇻 Latvia 🇱🇮 Liechtenstein 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇱 Poland 🇸🇮 Slovenia 🇸🇪 Sweden 🇨🇭 Switzerland 🇹🇼 Taiwan 🇺🇦 Ukraine 🇬🇧 United Kingdom 🇺🇸 United States