Black-Necked Grebe vs Chunky False Brook Salamander

Podiceps nigricollis compared with Aquiloeurycea cephalica

Key Differences

• Black-Necked Grebe is Endangered while Chunky False Brook Salamander is Least Concern.

Taxonomic Classification

Rank	Black-Necked Grebe	Chunky False Brook Salamander
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Amphibia (Amphibians)
Order	Podicipediformes (Podicipediformes)	Caudata (Caudata)
Family	Podicipedidae	Plethodontidae
Genus	Podiceps	Aquiloeurycea
Species	Podiceps nigricollis	Aquiloeurycea cephalica

Evolutionary Relationship

Black-Necked Grebe and Chunky False Brook Salamander share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-Necked Grebe

EN — Endangered

Chunky False Brook Salamander

LC — Least Concern

Physical Characteristics

Attribute	Black-Necked Grebe	Chunky False Brook Salamander
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.

Chunky False Brook Salamander

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico.

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.

Chunky False Brook Salamander

The Chunky False Brook Salamander (Aquiloeurycea cephalica) is a Least Concern plethodontid salamander endemic to Mexico, found in cloud forest and humid montane habitats in the Sierra Madre Oriental and related mountain ranges. The genus Aquiloeurycea is a recently erected Mexican endemic genus segregated from the broader genus Pseudoeurycea, comprising several small, robustly built (hence 'chunky') salamanders associated with high-elevation forests. Like all plethodontids, A. cephalica is a lungless salamander that breathes entirely through its moist, vascularized skin and the lining of its mouth. It is a direct developer, skipping the aquatic larval stage entirely and laying eggs in terrestrial microhabitats such as rotting logs, leaf litter, and soil. A. cephalica inhabits cool, humid forests of pine-oak and cloud forest zones in northern Mexico, where it forages for small invertebrates in the leaf litter and soil. The IUCN assesses it as Least Concern due to its reasonably wide distribution within its montane range. Deforestation, cattle grazing, and the conversion of cloud forest to agriculture represent ongoing threats to populations throughout its range.