Белоголовый орлан vs common nut clam

Haliaeetus leucocephalus compared with Nucula nucleus

Key Differences

• Белоголовый орлан is Not Evaluated while common nut clam is Least Concern.

Taxonomic Classification

Rank	Белоголовый орлан	common nut clam
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum	Chordata (хордовые)	Mollusca (моллюски)
Class	Aves (птицы)	Bivalvia (двустворчатые)
Order	Accipitriformes (ястребообразные)	Nuculida (Nuculida)
Family	Accipitridae (Hawks & Eagles)	Nuculidae
Genus	Haliaeetus (Sea Eagles)	Nucula
Species	Haliaeetus leucocephalus	Nucula nucleus

Evolutionary Relationship

Белоголовый орлан and common nut clam share a common ancestor at the Kingdom level: Animalia. (животные)

Conservation Status

Белоголовый орлан

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

common nut clam

LC — Least Concern

Physical Characteristics

Attribute	Белоголовый орлан	common nut clam
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

Белоголовый орлан

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 nut clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Белоголовый орлан

The national bird of the United States and a symbol of American conservation success, bald eagles have a wingspan of up to 2.4 meters and inhabit forests and wetlands near open water across North America. Powerful aerial predators and scavengers, they specialize in fish but also take waterfowl and carrion. Nearly extinct by the 1960s due to DDT poisoning and hunting, the bald eagle recovered dramatically following pesticide bans and the Endangered Species Act.

common nut clam

<em>Nucula nucleus</em>, the common nut clam, is a small marine bivalve mollusk in the family Nuculidae, among the most primitive living bivalves in terms of evolutionary lineage. This deposit-feeding species typically burrows into soft sediments — muddy and sandy substrates — in coastal and subtidal marine environments. <em>Nucula nucleus</em> uses its elongated palp proboscides to sort organic particles and detritus from sediment, making it a key functional contributor to benthic nutrient cycling. Its geographic range spans European Atlantic and Mediterranean coasts, with documented occurrences in Belgium, Denmark, Norway, and Sweden, typically in sheltered bays, estuaries, and sublittoral soft-bottom habitats. The species is currently assessed as Least Concern by the IUCN. Biological traits such as lifespan, body size, and diet remain poorly documented at a population level for this species in formal assessments, though it is known as a selective deposit feeder. The common nut clam plays an important role in benthic community structure and sediment processing, and serves as prey for demersal fish, sea stars, and other bottom-dwelling predators across its European range.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden