ハクトウワシ vs Clustered yellowtops

Haliaeetus leucocephalus compared with Flaveria trinervia

Taxonomic Classification

Rank	ハクトウワシ	Clustered yellowtops
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Aves (鳥類)	Magnoliopsida (モクレン綱)
Order	Accipitriformes (タカ目)	Asterales (キク目)
Family	Accipitridae (Hawks & Eagles)	Asteraceae (Daisy Family)
Genus	Haliaeetus (Sea Eagles)	Flaveria
Species	Haliaeetus leucocephalus	Flaveria trinervia

Conservation Status

ハクトウワシ

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Clustered yellowtops

NE — Not Evaluated

Physical Characteristics

Attribute	ハクトウワシ	Clustered yellowtops
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).

Clustered yellowtops

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (Congo (DRC), Zimbabwe), Asia (4 countries), Europe (Belgium), North America (United States), and South America (Brazil).

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。

Clustered yellowtops

Flaveria trinervia, commonly known as clustered yellowtops, is a fast-growing annual herb in the family Asteraceae. Native to tropical and subtropical regions, it has a remarkably wide distribution spanning Africa, Asia, Europe, and the Americas, where it thrives as a pioneer species in disturbed habitats, roadsides, agricultural margins, and waste ground. The plant typically reaches 30–90 centimeters in height, producing lance-shaped leaves arranged oppositely along branching stems. Its small yellow flower heads are clustered in dense corymbs, giving the species its common name. Flaveria trinervia is notable among plants for utilizing C4 carbon fixation, an efficient photosynthetic pathway that enables rapid growth under warm, high-light conditions with limited water. This metabolic adaptation contributes to its success as a colonizer across diverse tropical and warm-temperate environments. The species is considered Not Evaluated by the IUCN, reflecting its wide range and apparent abundance rather than any formal assessment. Seeds are dispersed by wind, facilitating its spread into new territories. Though not a major agricultural weed, it can establish in cultivated fields. The genus Flaveria, comprising around 23 species, is studied extensively by plant biologists for insights into the evolution of C4 photosynthesis from ancestral C3 pathways.