Matthew Studebaker / Red-necked Grebe (Podiceps grisegena) calling, Alaska

Connor Stefanison / Red-necked Grebe (Podiceps grisegena) at nest in swamp, British Columbia, Canada

David Pattyn / Red necked grebe (Podiceps grisegena) approaching a competitor in an attempt to drive him away during the courting season, Danube area, Bulgaria, April

Gerrit Vyn / Adult Red-necked Grebes (Podiceps grisegena) in breeding plumage performing "whinny-braying" duet in defense of territory. Fairbanks, Alaska, USA, July.

Michael Quinton / Red-necked Grebe (Podiceps grisegena) parent on nest with eggs in boreal pond, Alaska

Markus Varesvuo / Red-necked grebe (Podiceps grisegena) on water. Latvia. April.

Loic Poidevin / Red necked grebe (Podiceps grisegena) sitting on nest amongst water lilies and reeds. Danube Delta, Romania. May.

Sven Zacek / Red-necked grebe (Podiceps grisegena) sitting on its nest, Tartumaa, Estonia, May.

Chris Romeiks / Red-necked Grebe (Podiceps grisegena) pair courting, Mecklenburg-Vorpommern, Germany

David Tipling / Red-necked Grebe (Podiceps grisegena) swimming in water filled gravel pit, Kent, England, UK. Winter

Markus Varesvuo / Red-necked grebe (Podiceps grisegena) migrating flock in flight, Finland, May

Markus Varesvuo / Red-necked Grebe (Podiceps grisegena), adult with summer plumage in a lake carrying nesting material. Ristiina, Finland.

Hanne & Jens Eriksen / Red necked grebe (Podiceps grisegena) family at nest, Denmark, May

Hanne & Jens Eriksen / Red necked grebe (Podiceps grisegena) family at nest, Denmark, May

Filippo Nucifora / Red-necked Grebe (Podiceps grisegena), Alaska

Connor Stefanison / Red-necked Grebe (Podiceps grisegena) pair fighting, British Columbia, Canada

Connor Stefanison / Red-necked Grebe (Podiceps grisegena) calling, British Columbia, Canada

David Pattyn / Red-necked Grebe (Podiceps grisegena) pair displaying during courtship. Bulgaria. April.

David Pattyn / Red-necked Grebe (Podiceps grisegena) in defensive posture in the breeding season. Bulgaria. April.

David Pattyn / Red-necked Grebe (Podiceps grisegena) mimicking each other during courtship display. Bulgaria. April.

David Pattyn / Red-necked Grebe (Podiceps grisegena) reflected in water, Bulgaria. April.

David Pattyn / Red-necked Grebe (Podiceps grisegena) portrait, Bulgaria. April.

David Pattyn / Red-necked Grebe (Podiceps grisegena) portrait, Bulgaria. April.

David Pattyn / Red necked grebes (Podiceps grisegena) performing typical courtship dance whilst calling, Danube area, Bulgaria, April

David Pattyn / Red necked grebe (Podiceps grisegena) head profile portrait, Danube area, Bulgaria, April

David Pattyn / Red necked grebe (Podiceps grisegena) portrait, Danube area, Bulgaria, April

David Pattyn / Red necked grebe (Podiceps grisegena) portrait, Danube area, Bulgaria, April

David Pattyn / Red necked grebes (Podiceps grisegena) performing their typical courtship dance, Danube area, Bulgaria, April

David Pattyn / Red necked grebe (Podiceps grisegena) in early morning mist, Danube area in Bulgaria, April

Tom Vezo / Red-necked Grebe (Podiceps grisegena) pair at nest, British Columbia, Canada

Tom Vezo / Red-necked Grebe (Podiceps grisegena) at nest with eggs, British Columbia, Canada

Michael Quinton / Red-necked Grebe (podiceps grisegena) on nest, Alaska

Markus Varesvuo / Red-necked Grebes (Podiceps grisegna) on water performing courtship display. Sweden, April. Magic Moments book plate, page 12.

Mike Read / Red necked grebe {Podiceps grisegena} on water

Donald M. Jones / Red-necked Grebe (Podiceps grisegena) calling, western Montana

Donald M. Jones / Red-necked Grebe (Podiceps grisegena) sitting on nest, western Montana

Donald M. Jones / Red-necked Grebe (Podiceps grisegena) male and female in courtship, western Montana

Donald M. Jones / Red-necked Grebe (Podiceps grisegena) on floating nest, western Montana

Donald M. Jones / Red-necked Grebe (Podiceps grisegena) fixing nest, western Montana

Gerrit Vyn / Red-necked Grebe (Podiceps grisegena) in breeding plumage performing "whinny-braying" duet in defense of territory. Seward Peninsula, Alaska, USA, June.

Gerrit Vyn / Red-necked Grebe (Podiceps grisegena) portrait on water, in breeding plumage. Seward Peninsula, Alaska, USA, June.

Robin Chittenden / Red-necked grebe (Podiceps grisegena) on water, Norfolk, UK.

Robin Chittenden / Red-necked grebe (Podiceps grisegena) on water, Norfolk, UK.

Gerrit Vyn / Adult Red-necked Grebe (Podiceps grisegena) in breeding plumage. Seward Peninsula, Alaska, USA, June.

Gerrit Vyn / Adult Red-necked Grebe (Podiceps grisegena) in breeding plumage, on water, Seward Peninsula, Alaska, USA, May.

Hanne & Jens Eriksen / Red necked grebe {Podiceps grisegena} reflection on water, Fyn, Denmark

Hanne & Jens Eriksen / Red necked grebe {Podiceps grisegena} on nest, Fyn, Denmark

Hanne & Jens Eriksen / Red necked grebe {Podiceps grisegena} on water, Fyn, Denmark

Bjorn Forsberg / Red necked grebe {Podiceps grisegna} Oland, Sweden

Tom Vezo / Red necked Grebe {Podiceps grisegena} Anchorage, Alaska.

Niall Benvie / Red necked grebe {Podiceps grisegena} male post-mating display, Estonia

Niall Benvie / Red necked grebe {Podiceps grisegena} Estonia

Niall Benvie / Red necked grebe {Podiceps grisegena} stretching leg, Estonia

David Pike / Great northern diver {Gavia immer} attacking Red necked grebe chick {Podiceps grisegna}. Alaska, USA

Niall Benvie / Red necked grebes mating {Podiceps grisegena} Estonia

Matthias Breiter / Red-necked Grebe (Podiceps grisegena) on nest with egg, Anchorage, Alaska

Michael Quinton / Red-necked Grebe (Podiceps grisegena) parent incubating eggs on nest made of reeds in summer, Idaho

Niall Benvie / Red necked grebe {Podiceps grisegena} on water, Tartumaa, Estonia

Niall Benvie / Red necked grebe {Podiceps grisegena} Tartumaa, Estonia

Jaymi Heimbuch / Red-necked Grebe (Podiceps grisegena) calling, Nome, Alaska

Jaymi Heimbuch / Red-necked Grebe (Podiceps grisegena) calling, Nome, Alaska

Jaymi Heimbuch / Red-necked Grebe (Podiceps grisegena) calling, Nome, Alaska

Jaymi Heimbuch / Red-necked Grebe (Podiceps grisegena), Nome, Alaska

Jaymi Heimbuch / Red-necked Grebe (Podiceps grisegena) pair calling, Nome, Alaska

Tom Vezo / Red-necked Grebe (Podiceps grisegena) pair at nest, British Columbia, Canada

Tom Vezo / Red-necked Grebe (Podiceps grisegena) on nest, British Columbia, Canada

Michael Quinton / Red-necked Grebe (podiceps grisegena) on nest, Alaska

David Pike / Great northern diver {Gavia immer} attacking Red-necked grebe chick. Alaska USA

David Pike / Red necked grebe {Podiceps grisegena} Alaska USA

Thomas Hinsche, BIA / Red-necked Grebe (Podiceps grisegena) male calling, Saxony-Anhalt, Germany

Thomas Hinsche, BIA / Red-necked Grebe (Podiceps grisegena) male, Saxony-Anhalt, Germany

David Pattyn / Red necked grebe (Podiceps grisegena) on water, Danube delta, Romania. July.

Loic Poidevin / Black-necked grebe (Podiceps nigricollis) swimming on pond with reed beds behind, Spain. April.

Jussi Murtosaari / Pair of adult Red-necked grebe (Podiceps grisegena) courting, Finland. May.

Jussi Murtosaari / Pair of adult Red-necked grebe (Podiceps grisegena) calling, Finland. May.

Jussi Murtosaari / Red-necked grebe (Podiceps grisegena) swimming on lake, Finland. May.

Jussi Murtosaari / Adult pair of Red-necked grebe (Podiceps grisegena) swimming on lake, Finland. May.

Robin Chittenden / Black-necked grebe (Podiceps nigricollis). Suffolk, England, UK. December.

Jussi Murtosaari / Red-necked grebe (Podiceps grisegena) pair with chicks, adult feeding chick on mate's back. Jyvaskyla, Central Finland. June.

Jess Findlay/ BIA / Red-necked Grebe (Podiceps grisegena) pair courting, British Columbia, Canada

Thomas Hinsche/ BIA / Red-necked Grebe (Podiceps grisegena) pair courting, Saxony-Anhalt, Germany

Thomas Hinsche/ BIA / Red-necked Grebe (Podiceps grisegena) pair in territorial display, Saxony-Anhalt, Germany