Bigeye thresher vs Black-headed Ibis

Alopias pelagicus compared with Threskiornis melanocephalus

Key Differences

• Bigeye thresher is Endangered while Black-headed Ibis is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	Black-headed Ibis
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Pelecaniformes (Pelecaniformes)
Family	Alopiidae	Threskiornithidae
Genus	Alopias	Threskiornis
Species	Alopias pelagicus	Threskiornis melanocephalus

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Black-headed Ibis

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	Black-headed Ibis
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.

Black-headed Ibis

Habitat

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

Range

Found across Asia (Taiwan) and Europe (5 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Black-headed Ibis

The Black-headed Ibis (Threskiornis melanocephalus) is a species in the genus Threskiornis. It is currently classified as Near Threatened on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Shared Countries

Both species can be found in 1 countries:

🇹🇼 Taiwan