Amazon Black Howler vs Gray-cowled Wood-Rail

Alouatta nigerrima compared with Aramides cajanea

Taxonomic Classification

Rank	Amazon Black Howler	Gray-cowled Wood-Rail
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Aves (นก)
Order	Primates (อันดับวานร)	Gruiformes (Gruiformes)
Family	Atelidae	Rallidae
Genus	Alouatta	Aramides
Species	Alouatta nigerrima	Aramides cajanea

Evolutionary Relationship

Amazon Black Howler and Gray-cowled Wood-Rail share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Amazon Black Howler

LC — Least Concern

Gray-cowled Wood-Rail

LC — Least Concern

Physical Characteristics

Attribute	Amazon Black Howler	Gray-cowled Wood-Rail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon Black Howler

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Gray-cowled Wood-Rail

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

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.

Gray-cowled Wood-Rail

Gray-cowled Wood-Rail (Aramides cajanea) 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.