perkoz dwuczuby Podiceps cristatus

Fairly common on lakes, reservoirs, and along larger rivers, mainly with bordering reeds where it builds a floating nest platform. In winter sometimes seen on inshore ocean waters (mainly in freezing weather). Breeding pairs are territorial, but flocks form in winter. Large, elegant, and long-necked grebe. Breeding plumage has beautiful tawny cheeks and black crests (often held flat). In nonbreeding plumage, face and neck bright white with dark line through eye.