Atiu Swiftlet vs Choco Warbler

Aerodramus sawtelli compared with Myiothlypis chlorophrys

Key Differences

• Atiu Swiftlet is Vulnerable while Choco Warbler is Least Concern.

Taxonomic Classification

Rank	Atiu Swiftlet	Choco Warbler
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Apodiformes (Apodiformes)	Passeriformes (Songbirds)
Family	Apodidae	Parulidae
Genus	Aerodramus	Myiothlypis
Species	Aerodramus sawtelli	Myiothlypis chlorophrys

Evolutionary Relationship

Atiu Swiftlet and Choco Warbler share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Atiu Swiftlet

VU — Vulnerable

Choco Warbler

LC — Least Concern

Physical Characteristics

Attribute	Atiu Swiftlet	Choco Warbler
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atiu Swiftlet

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Choco Warbler

Habitat

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

Range

Found in Ecuador.

Atiu Swiftlet

The Atiu Swiftlet (Aerodramus sawtelli) is a species in the genus Aerodramus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Choco Warbler

The Choco Warbler (Myiothlypis chlorophrys) is a small, ground-associated warbler in the family Parulidae (New World warblers), endemic to the subtropical Andean foothills of western Ecuador in the Chocó biogeographic region. It belongs to the diverse genus Myiothlypis (formerly placed in Basileuterus), a group of largely terrestrial neotropical warblers that forage in the undergrowth of humid montane forests. The Choco Warbler is characterised by olive-green upperparts, yellow underparts, and a distinctive supercilium pattern on the head. It inhabits the dense undergrowth of humid foothill and lower montane forest at elevations between approximately 600 and 1,500 metres, foraging close to the ground among fallen leaves and low shrubs for small invertebrates. Its range appears largely restricted to southwestern and northwestern Ecuador in the humid Pacific slope forest zone, though the precise distribution boundary with related species is still being refined taxonomically. The IUCN classifies this species as Least Concern. Ecuador's Pacific slope forests face considerable pressure from agricultural expansion — particularly banana, cacao, and palm oil cultivation — and human settlement, though the species appears to tolerate some degree of forest degradation within its range.