Bigeye thresher vs Cocoa Thrush

Alopias pelagicus compared with Turdus fumigatus

Key Differences

• Bigeye thresher is Endangered while Cocoa Thrush is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Cocoa Thrush
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Passeriformes (Songbirds)
Family	Alopiidae	Turdidae
Genus	Alopias	Turdus
Species	Alopias pelagicus	Turdus fumigatus

Evolutionary Relationship

Bigeye thresher and Cocoa Thrush share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Cocoa Thrush

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Cocoa Thrush
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.

Cocoa Thrush

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

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.

Cocoa Thrush

The cocoa thrush (Turdus fumigatus) is a medium-sized thrush in the family Turdidae, native to the tropical forests, gardens, and woodland edges of the Lesser Antilles and northern South America, including Trinidad, Tobago, Venezuela, Guyana, Suriname, French Guiana, and northern Brazil. Like other Turdus thrushes, it is primarily a ground and low vegetation forager, consuming earthworms, insects, berries, and small fruits; its melodious, flute-like song is a characteristic sound of its forest and garden habitats. The species is named for its plain, smoky-brown plumage — fumigatus meaning smoke-coloured in Latin — with little differentiation between sexes. It inhabits primary and secondary forest, cocoa and citrus plantations, and shaded gardens, showing tolerance for modified land use that has allowed it to persist in many humanised landscapes. Nesting occurs in trees or shrubs; clutches are typically two to three eggs, incubated by the female alone. The cocoa thrush has no natural presence in Norway; country-level database records to that effect are artefacts. It is classified as Least Concern by the IUCN, with wide distribution and stable or increasing populations in some areas due to its adaptability to modified habitats. It is closely related to the similar cocoa thrush assemblage of Turdus thrushes found across the Neotropics, and taxonomy within the group has been subject to ongoing revision.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia