Harmless Serotine vs Willow Warbler

Eptesicus innoxius compared with Phylloscopus trochilus

Key Differences

• Harmless Serotine is Near Threatened while Willow Warbler is Vulnerable.

Taxonomic Classification

Rank	Harmless Serotine	Willow Warbler
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Passeriformes (Songbirds)
Family	Vespertilionidae	Phylloscopidae
Genus	Eptesicus	Phylloscopus
Species	Eptesicus innoxius	Phylloscopus trochilus

Evolutionary Relationship

Harmless Serotine and Willow Warbler share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Harmless Serotine

NT — Near Threatened

Willow Warbler

VU — Vulnerable

Physical Characteristics

Attribute	Harmless Serotine	Willow Warbler
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Willow Warbler

Habitat

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

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Willow Warbler

Willow Warbler (Phylloscopus trochilus) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.