pigargo-americano vs Common Cotton-Grass

Haliaeetus leucocephalus compared with Eriophorum angustifolium

Key Differences

• pigargo-americano is Not Evaluated while Common Cotton-Grass is Vulnerable.

Taxonomic Classification

Rank	pigargo-americano	Common Cotton-Grass
Kingdom	Animalia (Animals)	Plantae (plantas)
Phylum	Chordata (cordados)	Magnoliophyta (Flowering Plants)
Class	Aves (ave)	Liliopsida (Monocots)
Order	Accipitriformes (Hawks & Eagles)	Poales (Grasses)
Family	Accipitridae (Hawks & Eagles)	Cyperaceae
Genus	Haliaeetus (Sea Eagles)	Eriophorum
Species	Haliaeetus leucocephalus	Eriophorum angustifolium

Conservation Status

pigargo-americano

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Common Cotton-Grass

VU — Vulnerable

Physical Characteristics

Attribute	pigargo-americano	Common Cotton-Grass
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

pigargo-americano

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 Cotton-Grass

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Found across Europe (6 countries) and North America (United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

pigargo-americano

A ave nacional dos Estados Unidos e símbolo do sucesso conservacionista americano, a águia-careca tem uma envergadura de até 2,4 metros e habita florestas e zonas húmidas próximas de águas abertas em toda a América do Norte. Quase extinta na década de 1960 devido ao envenenamento por DDT e à caça, recuperou de forma notável após as proibições de pesticidas e a Lei das Espécies em Perigo.

Common Cotton-Grass

<em>Eriophorum angustifolium</em>, commonly known as common cotton grass or many-stalked cottongrass, is a perennial sedge in the family Cyperaceae. It is distributed across peatlands, bogs, fens, and wet moorlands of Europe and North America, where it is often a dominant and ecologically significant species. Common cotton grass is easily recognized by its distinctive fluffy white seed heads, which resemble balls of cotton and appear conspicuously across boggy landscapes in late spring and summer. These cotton-like structures are modified perianth bristles that aid in wind dispersal of seeds. The species plays a vital role in peatland ecosystems as a peat-forming plant and provides food and nesting material for various wetland birds. It is assessed as Vulnerable on the IUCN Red List, reflecting ongoing habitat loss due to peatland drainage, agricultural conversion, and climate change. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States