European otter vs Long-tailed Sylph

Lutra lutra compared with Aglaiocercus kingii

Key Differences

• European otter is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	European otter	Long-tailed Sylph
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class	Mammalia (स्तनधारी)	Aves (पक्षी)
Order	Carnivora (मांसाहारी गण)	Apodiformes (Apodiformes)
Family	Mustelidae (Weasels & Otters)	Trochilidae
Genus	Lutra (Otters)	Aglaiocercus
Species	Lutra lutra	Aglaiocercus kingii

Evolutionary Relationship

European otter and Long-tailed Sylph share a common ancestor at the Phylum level: Chordata. (रज्जुकी)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	European otter	Long-tailed Sylph
Diet	Carnivore	—
Average Lifespan	10 years	—
Average Length	1.0 m	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). 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.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.

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