Alpine Bladder-fern vs American Bald Eagle

Cystopteris alpina compared with Haliaeetus leucocephalus

Key Differences

Alpine Bladder-fern is Near Threatened while American Bald Eagle is Not Evaluated.

Taxonomic Classification

Rank	Alpine Bladder-fern	American Bald Eagle
Kingdom	Plantae (식물)	Animalia (동물)
Phylum	Tracheophyta	Chordata (척삭동물)
Class	Polypodiopsida (고사리강)	Aves (새)
Order	Polypodiales (고사리목)	Accipitriformes (수리목)
Family	Cystopteridaceae	Accipitridae (Hawks & Eagles)
Genus	Cystopteris	Haliaeetus (Sea Eagles)
Species	Cystopteris alpina	Haliaeetus leucocephalus

Conservation Status

Alpine Bladder-fern

NT — Near Threatened

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Physical Characteristics

Attribute	Alpine Bladder-fern	American Bald Eagle
Diet	—	Carnivore
Average Lifespan	—	28 years
Average Length	—	90 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Alpine Bladder-fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

American Bald Eagle

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).

Alpine Bladder-fern

The Alpine Bladder-fern (Cystopteris alpina) is a species in the genus Cystopteris. It is currently classified as Near Threatened on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

American Bald Eagle

흰머리독수리(Haliaeetus leucocephalus)는 미국의 국조이자 미국 자연 보전 성공의 상징으로, 날개 폭이 최대 2.4미터에 달하며 북미 전역의 수변 삼림과 습지에 서식한다. 주로 물고기를 포식하는 강력한 공중 포식자이자 청소 동물로, DDT 오염과 남획으로 1960년대에 멸종 위기에 처했으나 농약 사용 금지와 멸종위기종보호법 시행 이후 극적으로 개체수가 회복되었다.