ハクトウワシ vs coastal small-reed

Haliaeetus leucocephalus compared with Calamagrostis pseudophragmites

Key Differences

ハクトウワシ is Not Evaluated while coastal small-reed is Least Concern.

Taxonomic Classification

Rank	ハクトウワシ	coastal small-reed
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Aves (鳥類)	Liliopsida (単子葉植物綱)
Order	Accipitriformes (タカ目)	Poales (イネ目)
Family	Accipitridae (Hawks & Eagles)	Poaceae (Grass Family)
Genus	Haliaeetus (Sea Eagles)	Calamagrostis
Species	Haliaeetus leucocephalus	Calamagrostis pseudophragmites

Conservation Status

ハクトウワシ

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

coastal small-reed

LC — Least Concern

Physical Characteristics

Attribute	ハクトウワシ	coastal small-reed
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

ハクトウワシ

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).

coastal small-reed

Habitat

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

Range

Found in Norway.

ハクトウワシ

アメリカの国鳥であり保全の成功を象徴するハクトウワシは翼開長が最大2.4 mに達し、北米全域の水辺近くの森林や湿地に生息する。強力な空中捕食者兼腐肉食者で魚を主食とするが、水鳥や腐肉も捕食する。DDT汚染と狩猟によって1960年代にほぼ絶滅に瀕したが、農薬の使用禁止と絶滅危惧種法の施行により劇的に回復した。

coastal small-reed

Coastal small-reed (Calamagrostis pseudophragmites) is a perennial grass in the family Poaceae, distributed across riparian and coastal habitats in Eurasia, from central and western Europe eastward through Russia and Central Asia to the Far East. Despite database records linking this species to Norway, its actual native range spans riverbanks, gravel bars, flood meadows, and coastal wetlands across the Eurasian continent. It forms tufted stands in disturbed and seasonally inundated soils, often colonising gravel banks following flooding events alongside willow scrub. The genus Calamagrostis encompasses numerous reed grass species adapted to wet, nutrient-poor, and often disturbed habitats. Coastal small-reed can tolerate fluctuating water levels and occasional drought. It is assessed as Least Concern by the IUCN, reflecting its broad distribution and adaptability across its native Eurasian range. In some areas of Europe, populations have declined due to river channelisation, reduced flooding, and loss of natural riverine processes. The species is an indicator of dynamic, naturally managed riparian systems and is used in restoration projects targeting floodplain biodiversity.