Bigeye thresher vs Gray-headed Chachalaca

Alopias pelagicus compared with Ortalis cinereiceps

Key Differences

• Bigeye thresher is Endangered while Gray-headed Chachalaca is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Gray-headed Chachalaca
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Galliformes (Galliformes)
Family	Alopiidae	Cracidae
Genus	Alopias	Ortalis
Species	Alopias pelagicus	Ortalis cinereiceps

Evolutionary Relationship

Bigeye thresher and Gray-headed Chachalaca share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Gray-headed Chachalaca

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Gray-headed Chachalaca
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

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

Gray-headed Chachalaca

Habitat

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

Range

Distributed across Colombia and Norway.

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia