Black-Necked Grebe vs Costa Central Oryzomys

Podiceps nigricollis compared with Nephelomys caracolus

Key Differences

• Black-Necked Grebe is Endangered while Costa Central Oryzomys is Least Concern.

Taxonomic Classification

Rank	Black-Necked Grebe	Costa Central Oryzomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Podicipediformes (Podicipediformes)	Rodentia (Rodents)
Family	Podicipedidae	Cricetidae
Genus	Podiceps	Nephelomys
Species	Podiceps nigricollis	Nephelomys caracolus

Evolutionary Relationship

Black-Necked Grebe and Costa Central Oryzomys share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-Necked Grebe

EN — Endangered

Costa Central Oryzomys

LC — Least Concern

Physical Characteristics

Attribute	Black-Necked Grebe	Costa Central Oryzomys
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.

Costa Central Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

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.