Slavonian Grebe vs Black-necked Grebe

In short

The Slavonian Grebe (Podiceps auritus) and the Black-necked Grebe (Podiceps nigricollis) are similar in size and structure, but can be distinguished by their plumage and behavior. The Slavonian Grebe has striking golden 'horns' in breeding plumage, while the Black-necked Grebe displays a more uniform dark neck and head. Both species are found in similar wetland habitats, but their vocalizations differ.

Identification tips

1. Look for the golden 'horns' on the Slavonian Grebe in breeding plumage. 2. Observe the neck color: chestnut in Slavonian, dark in Black-necked. 3. Note the habitat: Black-necked Grebes may be in larger colonies. 4. Listen for vocal differences: Slavonian's trills vs. Black-necked's mechanical calls. 5. Consider the season, as plumage differences are most pronounced during breeding.

Size

Both species are similar in size, typical of small grebes.

Plumage

In breeding plumage, the Slavonian Grebe has distinctive golden 'horns' of feathers extending from behind the eyes, contrasting with its chestnut neck and flanks. The Black-necked Grebe has a more uniform dark neck and head with a golden ear-tuft, but lacks the pronounced 'horns' of the Slavonian Grebe.

Behaviour

Both species engage in complex courtship displays, but the Slavonian Grebe is known for its elaborate rituals. The Black-necked Grebe often forms larger colonies during breeding.

Habitat

Both species prefer shallow wetlands with abundant vegetation, but the Black-necked Grebe is more likely to be found in saline lakes during the non-breeding season.

Voice

The Slavonian Grebe has a series of trills and whistles, while the Black-necked Grebe's calls are described as more mechanical and less musical.