Brittle Bladderfern vs Небесный сильф

Cystopteris tenuis compared with Aglaiocercus kingii

Key Differences

• Brittle Bladderfern is Not Evaluated while Небесный сильф is Least Concern.

Taxonomic Classification

Rank	Brittle Bladderfern	Небесный сильф
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Tracheophyta	Chordata (хордовые)
Class	Polypodiopsida (папоротниковые)	Aves (птицы)
Order	Polypodiales (многоножковые)	Apodiformes (стрижеобразные)
Family	Cystopteridaceae	Trochilidae
Genus	Cystopteris	Aglaiocercus
Species	Cystopteris tenuis	Aglaiocercus kingii

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Небесный сильф

LC — Least Concern

Physical Characteristics

Attribute	Brittle Bladderfern	Небесный сильф
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brittle Bladderfern

Habitat

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

Range

Distributed across Canada and United States.

Небесный сильф

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Небесный сильф

One of the most strikingly ornamented hummingbirds, male long-tailed sylphs have iridescent green plumage and dramatically elongated, ribbon-like outer tail feathers reaching up to 22 cm — over three times the body length. Found in Andean cloud forests of Colombia and Venezuela, they inhabit humid montane forest between 1,400–2,800 meters elevation. Males perform elaborate display flights to attract females. Their extravagant tails are a classic example of sexual selection via female preference.