Black-Necked Grebe vs Guam Flying Fox

Podiceps nigricollis compared with Pteropus tokudae

Key Differences

• Black-Necked Grebe is Endangered while Guam Flying Fox is Extinct.

Taxonomic Classification

Rank	Black-Necked Grebe	Guam Flying Fox
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Podicipediformes (Podicipediformes)	Chiroptera (Bats)
Family	Podicipedidae	Pteropodidae (Fruit Bats)
Genus	Podiceps	Pteropus (Flying Foxes)
Species	Podiceps nigricollis	Pteropus tokudae

Evolutionary Relationship

Black-Necked Grebe and Guam Flying Fox share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-Necked Grebe

EN — Endangered

Guam Flying Fox

EX — Extinct

Physical Characteristics

Attribute	Black-Necked Grebe	Guam Flying Fox
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-Necked Grebe

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Guam Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Black-Necked Grebe

Black-Necked Grebe (Podiceps nigricollis) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.