American Bald Eagle vs Cobalt Crust

Haliaeetus leucocephalus compared with Terana coerulea

Taxonomic Classification

Rank	American Bald Eagle	Cobalt Crust
Kingdom	Animalia (hewan)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (burung)	Agaricomycetes (Mushrooms)
Order	Accipitriformes (Hawks & Eagles)	Polyporales (Polyporales)
Family	Accipitridae (Hawks & Eagles)	Phanerochaetaceae
Genus	Haliaeetus (Sea Eagles)	Terana
Species	Haliaeetus leucocephalus	Terana coerulea

Conservation Status

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Cobalt Crust

NE — Not Evaluated

Physical Characteristics

Attribute	American Bald Eagle	Cobalt Crust
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).

Cobalt Crust

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Chile, Norway, and United States.

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.

Cobalt Crust

Cobalt crust (Terana coerulea) is a distinctive crust-forming basidiomycete fungus in the family Phlebiaceae (order Polyporales), found across a broad range spanning Europe, North America, parts of Asia, and Australasia. It grows on the underside of dead hardwood logs, branches, and fallen timber in humid woodland, forming brilliant cerulean to cobalt-blue, waxy, resupinate fruiting bodies that are among the most visually striking of all wood-decay fungi. The vivid blue coloration results from the production of a pigment called corulein or is associated with the interaction of copper with fungal metabolites. Despite its startling appearance, cobalt crust is a typical white-rot fungus that decomposes cellulose and lignin in dead wood, contributing to nutrient cycling and soil formation in forest ecosystems. It is best detected during wet autumn and winter months when fruiting is most prolific. Its IUCN conservation status is Not Evaluated, consistent with its wide distribution and occurrence in many protected woodland areas. Cobalt crust is a sought-after find by mycologists and nature photographers due to its extraordinary coloration.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇺🇸 United States