白头海雕 vs

Haliaeetus leucocephalus compared with Ensifer arboris

Taxonomic Classification

Rank	白头海雕
Kingdom	Animalia (动物界)	Bacteria (Bacteria)
Phylum	Chordata (脊索动物门)	Proteobacteria (變形菌門)
Class	Aves (鳥綱)	Alphaproteobacteria (α-变形菌纲)
Order	Accipitriformes (鷹形目)	Rhizobiales (根瘤菌目)
Family	Accipitridae (Hawks & Eagles)	Rhizobiaceae
Genus	Haliaeetus (Sea Eagles)	Ensifer
Species	Haliaeetus leucocephalus	Ensifer arboris

Conservation Status

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

NE — Not Evaluated

Physical Characteristics

Attribute	白头海雕
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

白头海雕

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).

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

白头海雕

白头海雕是美国国鸟，也是美国生态保护史上的成功案例，曾因滴滴涕（DDT）的广泛使用而濒临灭绝，经保护措施的实施后种群数量已显著恢复。该物种在IUCN红色名录中被评估为无危（LC），以白色头颈和尾羽与深棕色体羽形成的鲜明对比为主要识别特征。它们主要以鱼类为食，也会捕食哺乳动物和腐肉。

树形剑菌（Ensifer arboris）是一种革兰氏阴性固氮菌，能在非洲和亚洲干旱及半干旱地区的豆科树木根部形成有效根瘤。它栖息于热带和亚热带环境中的含羞草属及其他金合欢类豆科树木的根际和根瘤中，能将大气中的氮素转化为宿主树木可利用的氨。