Buff-necked Ibis vs Guam Flying Fox

Theristicus caudatus compared with Pteropus tokudae

Key Differences

• Buff-necked Ibis is Least Concern while Guam Flying Fox is Extinct.

Taxonomic Classification

Rank	Buff-necked Ibis	Guam Flying Fox
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Pelecaniformes (Pelecaniformes)	Chiroptera (Bats)
Family	Threskiornithidae	Pteropodidae (Fruit Bats)
Genus	Theristicus	Pteropus (Flying Foxes)
Species	Theristicus caudatus	Pteropus tokudae

Evolutionary Relationship

Buff-necked Ibis and Guam Flying Fox share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Buff-necked Ibis

LC — Least Concern

Guam Flying Fox

EX — Extinct

Physical Characteristics

Attribute	Buff-necked Ibis	Guam Flying Fox
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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).

Guam Flying Fox

Habitat

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.