Adder'S Tongue vs Long-tailed Sylph

Ophioglossum vulgatum compared with Aglaiocercus kingii

Key Differences

Adder'S Tongue is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Adder'S Tongue	Long-tailed Sylph
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Aves (Birds)
Order	Ophioglossales (Ophioglossales)	Apodiformes (Apodiformes)
Family	Ophioglossaceae	Trochilidae
Genus	Ophioglossum	Aglaiocercus
Species	Ophioglossum vulgatum	Aglaiocercus kingii

Conservation Status

Adder'S Tongue

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Adder'S Tongue	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Adder'S Tongue

Habitat

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

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Colombia). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Adder'S Tongue

The Adder'S Tongue (Ophioglossum vulgatum) is a species in the genus Ophioglossum. It is currently classified as Vulnerable on the IUCN Red List. This species inhabits Typically found in moist, shaded forest floors and tropical canopies, found across Belgium, Colombia, Denmark, Norway, and Portugal.

Long-tailed Sylph

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.