Brittle Bladderfern vs Collared Myna

Cystopteris tenuis compared with Acridotheres albocinctus

Key Differences

• Brittle Bladderfern is Not Evaluated while Collared Myna is Least Concern.

Taxonomic Classification

Rank	Brittle Bladderfern	Collared Myna
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (cordados)
Class	Polypodiopsida (Polypodiopsida)	Aves (ave)
Order	Polypodiales (Polypodiales)	Passeriformes (Songbirds)
Family	Cystopteridaceae	Sturnidae
Genus	Cystopteris	Acridotheres
Species	Cystopteris tenuis	Acridotheres albocinctus

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Collared Myna

LC — Least Concern

Physical Characteristics

Attribute	Brittle Bladderfern	Collared Myna
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.

Collared Myna

Habitat

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

Range

Found in Norway.

Brittle Bladderfern

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

Collared Myna

The Collared Myna, known scientifically as <em>Acridotheres albocinctus</em>, is a passerine bird belonging to the starling family Sturnidae. <em>Acridotheres albocinctus</em> is recognised by its contrasting plumage, which typically features a dark body with a distinct white collar or band — a feature reflected in both its common and scientific names. As a member of the myna genus Acridotheres, this species generally inhabits open woodland, grassland edges, and areas associated with human settlement, where it forages on the ground for invertebrates, fruits, and seeds. It is reported to occur in Norway according to available range data. Detailed biological traits including typical lifespan, body length, and weight are poorly documented for this species in available literature. The Collared Myna is currently assessed as Least Concern on the IUCN Red List, indicating that the global population is considered stable without significant conservation concerns at this time.