Female Ring-necked Duck, preening

Female Ring-necked Duck resting on the water, some preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Female Ring-necked Duck resting on the water

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Female Ring-necked Duck resting on the water

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Female Ring-necked Duck resting on the water with Falcated Duck

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Black-necked Grebe, preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Black-necked Grebes, preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Red-necked Grebe, some preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Ferruginous Duck (suspected hybrid), preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Falcated Duck, resting and preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior

Ferruginous Duck (suspected hybrid), preening

Osaka Museum of Natural History

Movie Archives of Animal Behavior