Amazon Black Howler vs Plain-flanked Rail

Alouatta nigerrima compared with Rallus wetmorei

Key Differences

• Amazon Black Howler is Least Concern while Plain-flanked Rail is Endangered.

Taxonomic Classification

Rank	Amazon Black Howler	Plain-flanked Rail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Gruiformes (Gruiformes)
Family	Atelidae	Rallidae
Genus	Alouatta	Rallus
Species	Alouatta nigerrima	Rallus wetmorei

Evolutionary Relationship

Amazon Black Howler and Plain-flanked Rail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Amazon Black Howler

LC — Least Concern

Plain-flanked Rail

EN — Endangered

Physical Characteristics

Attribute	Amazon Black Howler	Plain-flanked Rail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon Black Howler

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Plain-flanked Rail

Habitat

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

Range

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

Amazon Black Howler

The Amazon Black Howler (Alouatta nigerrima) is a species in the genus Alouatta. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.