American Bald Eagle vs common hydra

Haliaeetus leucocephalus compared with Hydra vulgaris

Taxonomic Classification

Rank	American Bald Eagle	common hydra
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Aves (burung)	Hydrozoa (Hydrozoa)
Order	Accipitriformes (Hawks & Eagles)	Anthoathecata (Anthoathecata)
Family	Accipitridae (Hawks & Eagles)	Hydridae
Genus	Haliaeetus (Sea Eagles)	Hydra
Species	Haliaeetus leucocephalus	Hydra vulgaris

Evolutionary Relationship

American Bald Eagle and common hydra share a common ancestor at the Kingdom level: Animalia. (hewan)

Conservation Status

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

common hydra

NE — Not Evaluated

Physical Characteristics

Attribute	American Bald Eagle	common hydra
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

American Bald Eagle

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 hydra

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

American Bald Eagle

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 hydra

<em>Hydra vulgaris</em>, commonly known as the common hydra, is a small freshwater cnidarian in the family Hydridae. Its conservation status has not been formally evaluated by the IUCN. The species is recorded from Denmark, Norway, and Sweden, with its native range understood to encompass Europe broadly. It typically inhabits slow-moving or still freshwater bodies such as ponds, lakes, and streams, where it attaches to aquatic vegetation or submerged substrates. The common hydra is notable for its remarkable regenerative capabilities and has been the subject of substantial biological research. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden