白头海雕 vs Braun'S Holly Fern

Haliaeetus leucocephalus compared with Polystichum braunii

Key Differences

• 白头海雕 is Not Evaluated while Braun'S Holly Fern is Critically Endangered.

Taxonomic Classification

Rank	白头海雕	Braun'S Holly Fern
Kingdom	Animalia (动物界)	Plantae (植物)
Phylum	Chordata (脊索动物门)	Tracheophyta
Class	Aves (鳥綱)	Polypodiopsida (水龍骨綱)
Order	Accipitriformes (鷹形目)	Polypodiales (水龙骨目)
Family	Accipitridae (Hawks & Eagles)	Dryopteridaceae
Genus	Haliaeetus (Sea Eagles)	Polystichum
Species	Haliaeetus leucocephalus	Polystichum braunii

Conservation Status

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Braun'S Holly Fern

CR — Critically Endangered

Physical Characteristics

Attribute	白头海雕	Braun'S Holly Fern
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).

Braun'S Holly Fern

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (4 countries) and North America (Canada, United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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。

Braun'S Holly Fern

The Braun'S Holly Fern (Polystichum braunii) is a species in the genus Polystichum. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and

Shared Countries

Both species can be found in 5 countries:

🇩🇰 Denmark 🇫🇷 France 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States