Águila cabeza blanca vs common freshwater nerite

Haliaeetus leucocephalus compared with Theodoxus fluviatilis

Key Differences

• Águila cabeza blanca is Not Evaluated while common freshwater nerite is Least Concern.

Taxonomic Classification

Rank	Águila cabeza blanca	common freshwater nerite
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (moluscos)
Class	Aves (Birds)	Gastropoda (gastrópodos)
Order	Accipitriformes (Hawks & Eagles)	Cycloneritida (Cycloneritida)
Family	Accipitridae (Hawks & Eagles)	Neritidae
Genus	Haliaeetus (Sea Eagles)	Theodoxus
Species	Haliaeetus leucocephalus	Theodoxus fluviatilis

Evolutionary Relationship

Águila cabeza blanca and common freshwater nerite share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Águila cabeza blanca

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

common freshwater nerite

LC — Least Concern

Physical Characteristics

Attribute	Águila cabeza blanca	common freshwater nerite
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

Águila cabeza blanca

Habitat

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

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

common freshwater nerite

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (11 countries).

Águila cabeza blanca

El ave nacional de los Estados Unidos y símbolo del éxito conservacionista americano, el águila cabeza blanca tiene una envergadura de hasta 2,4 metros y habita bosques y humedales próximos a aguas abiertas en toda Norteamérica. Casi extinta en la década de 1960 por el envenenamiento con DDT y la caza, se recuperó de forma notable gracias a las prohibiciones de pesticidas y la Ley de Especies en Peligro.

common freshwater nerite

<em>Theodoxus fluviatilis</em>, commonly known as the common freshwater nerite, is a small aquatic gastropod mollusc belonging to the family Neritidae. This species is widely distributed across Europe, with documented occurrences in Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Hungary, Latvia, Norway, and Sweden. It typically inhabits freshwater environments, including rivers, streams, and lakes, where it grazes on algae and biofilm on hard substrates such as rocks and submerged wood. The common freshwater nerite is assessed as Least Concern on conservation metrics, reflecting its broad distribution and relatively stable populations across much of its European range. Biological traits of this species remain poorly documented in the scientific literature. <em>Theodoxus fluviatilis</em> plays an ecological role as a grazer in freshwater benthic communities, contributing to the regulation of algal growth on hard surfaces. The species typically favors clean, well-oxygenated waters and can serve as an indicator of water quality in freshwater systems. Its distinctive small, dome-shaped shell with variable patterning makes it recognizable among freshwater invertebrates.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇱 Poland 🇸🇪 Sweden 🇬🇧 United Kingdom