Hourglass Dolphin vs Volcano Swiftlet

Lagenorhynchus cruciger compared with Aerodramus vulcanorum

Key Differences

• Hourglass Dolphin is Least Concern while Volcano Swiftlet is Near Threatened.

Taxonomic Classification

Rank	Hourglass Dolphin	Volcano Swiftlet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Apodiformes (Apodiformes)
Family	Delphinidae (Oceanic Dolphins)	Apodidae
Genus	Lagenorhynchus	Aerodramus
Species	Lagenorhynchus cruciger	Aerodramus vulcanorum

Evolutionary Relationship

Hourglass Dolphin and Volcano Swiftlet share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hourglass Dolphin

LC — Least Concern

Volcano Swiftlet

NT — Near Threatened

Physical Characteristics

Attribute	Hourglass Dolphin	Volcano Swiftlet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Volcano Swiftlet

Habitat

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

Range

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