Hurleur du Maranhao vs River Tern

Alouatta ululata compared with Sterna aurantia

Key Differences

• Hurleur du Maranhao is Endangered while River Tern is Vulnerable.

Taxonomic Classification

Rank	Hurleur du Maranhao	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Charadriiformes (Charadriiformes)
Family	Atelidae	Laridae
Genus	Alouatta	Sterna
Species	Alouatta ululata	Sterna aurantia

Evolutionary Relationship

Hurleur du Maranhao and River Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hurleur du Maranhao

EN — Endangered

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Hurleur du Maranhao	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hurleur du Maranhao

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

River Tern

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.