Bladder Fern vs Yellow-browed Sparrow

Cystopteris fragilis compared with Ammodramus aurifrons

Key Differences

• Bladder Fern is Not Evaluated while Yellow-browed Sparrow is Least Concern.

Taxonomic Classification

Rank	Bladder Fern	Yellow-browed Sparrow
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Aves (Birds)
Order	Polypodiales (Polypodiales)	Passeriformes (Songbirds)
Family	Cystopteridaceae	Passerellidae
Genus	Cystopteris	Ammodramus
Species	Cystopteris fragilis	Ammodramus aurifrons

Conservation Status

Bladder Fern

NE — Not Evaluated

Yellow-browed Sparrow

LC — Least Concern

Physical Characteristics

Attribute	Bladder Fern	Yellow-browed Sparrow
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bladder Fern

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

Yellow-browed Sparrow

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Yellow-browed Sparrow

Yellow-browed Sparrow (Ammodramus aurifrons) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇳🇴 Norway