Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) swimming near nest. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) preening, Kolvik, Porsanger, Finmark, Norway

Roger Powell / Pair of Slavonian / Horned grebes (Podiceps auritus) swimming and calling in tandem as part of their courtship display. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Pair of Slavonian (Horned) Grebes (Podiceps auritus) swimming and calling in tandem as part of their courtship display. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) surfacing near its nest site. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) female looking to add a reed stem to the nest platform. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) raising itself in the water and excercising wings after preening. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) raising itself in the water and excercising wings after preening. Kolvik, Porsanger, Finmark, Norway

Roger Powell / Slavonian / Horned Grebe (Podiceps auritus) raising itself in the water and excercising wings after preening. Kolvik, Porsanger, Finmark, Norway