Atlantic Gray Seal vs Buff-necked Ibis

Halichoerus grypus compared with Theristicus caudatus

Key Differences

• Atlantic Gray Seal is Vulnerable while Buff-necked Ibis is Least Concern.

Taxonomic Classification

Rank	Atlantic Gray Seal	Buff-necked Ibis
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Pinnipedia (Seals & Sea Lions)	Pelecaniformes (Pelecaniformes)
Family	Phocidae (True Seals)	Threskiornithidae
Genus	Halichoerus	Theristicus
Species	Halichoerus grypus	Theristicus caudatus

Evolutionary Relationship

Atlantic Gray Seal and Buff-necked Ibis share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Buff-necked Ibis

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	Buff-necked Ibis
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Gray Seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Buff-necked Ibis

Habitat

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

Range

Found across Europe (5 countries) and South America (Colombia, Venezuela).

Atlantic Gray Seal

The Atlantic Gray Seal (Halichoerus grypus) is a species in the genus Halichoerus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Buff-necked Ibis

Buff-necked Ibis (Theristicus caudatus) 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.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway