Bigeye thresher vs Buff-bellied Puffbird

Alopias pelagicus compared with Notharchus swainsoni

Key Differences

• Bigeye thresher is Endangered while Buff-bellied Puffbird is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Buff-bellied Puffbird
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Piciformes (Piciformes)
Family	Alopiidae	Bucconidae
Genus	Alopias	Notharchus
Species	Alopias pelagicus	Notharchus swainsoni

Evolutionary Relationship

Bigeye thresher and Buff-bellied Puffbird share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Buff-bellied Puffbird

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Buff-bellied Puffbird
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.

Buff-bellied Puffbird

Habitat

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

Range

Found in 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.

Buff-bellied Puffbird

The Buff-Bellied Puffbird (Notharchus swainsoni) is a species in the genus Notharchus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.