Black Tern vs Giant Otter

Chlidonias niger compared with Pteronura brasiliensis

Key Differences

• Black Tern is Least Concern while Giant Otter is Endangered.

Taxonomic Classification

Rank	Black Tern	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Charadriiformes (Charadriiformes)	Carnivora (Carnivorans)
Family	Laridae	Mustelidae (Weasels & Otters)
Genus	Chlidonias	Pteronura
Species	Chlidonias niger	Pteronura brasiliensis

Evolutionary Relationship

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

Conservation Status

Black Tern

LC — Least Concern

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Black Tern	Giant Otter
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).

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela