Slavonian Grebe vs Red-necked Grebe

In short

The Slavonian Grebe and Red-necked Grebe can be distinguished by size and plumage details. The Red-necked Grebe is larger and has a more robust bill, while the Slavonian Grebe is smaller with distinctive chestnut neck and flanks during breeding season.

Identification tips

1. Size and Bill: Look for the larger size and robust bill of the Red-necked Grebe. 2. Breeding Plumage: Note the Slavonian Grebe's chestnut neck and golden 'horns'. 3. Behavior: Observe for aggressive territorial behavior, more pronounced in the Red-necked Grebe. 4. Calls: Listen for the Red-necked Grebe's raucous calls during breeding season.

Size

The Red-necked Grebe is larger and more robust compared to the smaller Slavonian Grebe.

Plumage

In breeding plumage, the Slavonian Grebe has a striking chestnut neck and flanks, while the Red-necked Grebe has a more muted red neck and lacks the Slavonian's distinctive golden 'horns' on its head.

Behaviour

Both species exhibit territorial behavior, but the Red-necked Grebe is notably more aggressive, often engaging in underwater attack dives against intruders.

Habitat

Both species breed on northern lakes, but the Red-necked Grebe is more likely to be found in larger bodies of water and is more circumpolar in distribution.

Voice

The Red-necked Grebe is known for its frequent raucous calls during breeding, whereas the Slavonian Grebe is generally quieter.