ハクトウワシ vs Common Oak Pigmy

Haliaeetus leucocephalus compared with Stigmella roborella

Key Differences

• ハクトウワシ is Not Evaluated while Common Oak Pigmy is Least Concern.

Taxonomic Classification

Rank	ハクトウワシ	Common Oak Pigmy
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Arthropoda (節足動物)
Class	Aves (鳥類)	Insecta (昆虫)
Order	Accipitriformes (タカ目)	Lepidoptera (チョウ目)
Family	Accipitridae (Hawks & Eagles)	Nepticulidae
Genus	Haliaeetus (Sea Eagles)	Stigmella
Species	Haliaeetus leucocephalus	Stigmella roborella

Evolutionary Relationship

ハクトウワシ and Common Oak Pigmy share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

ハクトウワシ

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Common Oak Pigmy

LC — Least Concern

Physical Characteristics

Attribute	ハクトウワシ	Common Oak Pigmy
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).

Common Oak Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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。

Common Oak Pigmy

<em>Stigmella roborella</em>, the common oak pigmy, is a minute leaf-mining moth in the family Nepticulidae, one of the smallest families of moths. The larvae of <em>Stigmella roborella</em> mine the leaves of oak trees (Quercus species), creating sinuous, narrow galleries within the leaf parenchyma that are characteristic of the genus. This species typically inhabits deciduous woodland, forest margins, parks, and hedgerows throughout temperate Europe wherever suitable oak host trees occur. Its geographic range includes Belgium, Denmark, Norway, and Sweden, reflecting a broad temperate European distribution. The species is currently assessed as Least Concern by the IUCN. Biological traits such as lifespan, body size, and diet remain poorly documented at a formal population level for this species, though larval leaf-mining on Quercus is well established in entomological literature. Adults are extremely small with narrow, metallic-patterned wings. <em>Stigmella roborella</em> contributes to the rich invertebrate biodiversity associated with European oak ecosystems and serves as an indicator of the ecological complexity supported by oak-dominated woodland habitats.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden