Black Tern vs Hourglass Dolphin

Chlidonias niger compared with Lagenorhynchus cruciger

Taxonomic Classification

Rank	Black Tern	Hourglass Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Charadriiformes (Charadriiformes)	Cetacea (Whales & Dolphins)
Family	Laridae	Delphinidae (Oceanic Dolphins)
Genus	Chlidonias	Lagenorhynchus
Species	Chlidonias niger	Lagenorhynchus cruciger

Evolutionary Relationship

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

Conservation Status

Black Tern

LC — Least Concern

Hourglass Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Black Tern	Hourglass Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Tern

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Black Tern

Black Tern (Chlidonias niger) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.