Long-tailed Sylph vs Weeping Toothcrust

Aglaiocercus kingii compared with Dacryobolus sudans

Key Differences

• Long-tailed Sylph is Least Concern while Weeping Toothcrust is Vulnerable.

Taxonomic Classification

Rank	Long-tailed Sylph	Weeping Toothcrust
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Aves (Birds)	Agaricomycetes (Mushrooms)
Order	Apodiformes (Apodiformes)	Polyporales (Polyporales)
Family	Trochilidae	Dacryobolaceae
Genus	Aglaiocercus	Dacryobolus
Species	Aglaiocercus kingii	Dacryobolus sudans

Conservation Status

Long-tailed Sylph

LC — Least Concern

Weeping Toothcrust

VU — Vulnerable

Physical Characteristics

Attribute	Long-tailed Sylph	Weeping Toothcrust
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Weeping Toothcrust

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Brazil). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway