Allen s Swamp Monkey vs Common Tern

Allenopithecus nigroviridis compared with Sterna hirundo

Key Differences

• Allen s Swamp Monkey is Least Concern while Common Tern is Endangered.

Taxonomic Classification

Rank	Allen s Swamp Monkey	Common Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Charadriiformes (Charadriiformes)
Family	Cercopithecidae (Old World Monkeys)	Laridae
Genus	Allenopithecus	Sterna
Species	Allenopithecus nigroviridis	Sterna hirundo

Evolutionary Relationship

Allen s Swamp Monkey and Common Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Allen s Swamp Monkey

LC — Least Concern

Common Tern

EN — Endangered

Physical Characteristics

Attribute	Allen s Swamp Monkey	Common Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Allen s Swamp Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Tern

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Allen s Swamp Monkey

The Allen s Swamp Monkey (Allenopithecus nigroviridis) is a species in the genus Allenopithecus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Common Tern

Common Tern (Sterna hirundo) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.