恺木纹霸鹟 vs 白头海雕

Empidonax alnorum compared with Haliaeetus leucocephalus

Key Differences

• 恺木纹霸鹟 is Least Concern while 白头海雕 is Not Evaluated.

Taxonomic Classification

Rank	恺木纹霸鹟	白头海雕
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Aves (鳥綱)	Aves (鳥綱)
Order	Passeriformes (雀形目)	Accipitriformes (鷹形目)
Family	Tyrannidae	Accipitridae (Hawks & Eagles)
Genus	Empidonax	Haliaeetus (Sea Eagles)
Species	Empidonax alnorum	Haliaeetus leucocephalus

Evolutionary Relationship

恺木纹霸鹟 and 白头海雕 share a common ancestor at the Class level: Aves. (鳥綱)

Conservation Status

恺木纹霸鹟

LC — Least Concern

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Physical Characteristics

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

Habitat & Geographic Range

恺木纹霸鹟

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

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).

恺木纹霸鹟

桤木纹霸鹟（Empidonax alnorum）在IUCN红色名录中被评估为无危（LC），繁殖于北美洲北部的桤木和柳树丛中，冬季迁徙至南美洲越冬。该物种与柳纹霸鹟（E. traillii）外形极为相似，主要通过鸣叫声加以区分，是鸟类学研究中鉴别难度较高的物种之一。种群数量目前保持稳定。

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。

Shared Countries

Both species can be found in 3 countries:

🇪🇨 Ecuador 🇳🇴 Norway 🇺🇸 United States