Large raft of gentoo penguins (Pygoscelis papua), group feeding at Booth Island, Antarctica, Polar Regions

Eider duck (Somateria mollissima), male and female. Eider male and female interacting with each other in a winter raft. Demonstration of size difference between male and female.

Eider duck (Somateria mollissima), male. Male appearing to call someone. Actual behaviour is scratching and cleaning mouth with claw on webbed foot, while drifting with winter raft , Scotland, United Kingdom

Eider duck (Somateria mollissima), male and juvenile swimming past a fish farm, tend to raft there in the winter.

Eider duck (Somateria mollissima), male. Eider male peering out from in the middle of a winter raft. Various preening, calling and fighting in background.

Eider duck (Somateria mollissima), male in flight. The first few males arriving to a location which in minutes will become an Eider winter raft.

Eider Drake and female (Somateria mollissima) swimming together. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

Eider Drake (Somateria mollissima) flapping its wings. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

Eider male and female (Somateria mollissima) flying into land in a raft. Eiders raft together in winter, the males all squabiling together, preening, diving and flapping. Eiders come from all over to raft together , Scotland

Eider Drake (Somateria mollissima) cleaning itself in water. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

Eider duck (Somateria mollissima), male and female.Taking off from a winter raft and flying over hills and houses , Scotland, United Kingdom

Eider duck (Somateria mollissima), male. Calling while seperated from a winter raft.

Eider male and female (Somateria mollissima) flying off after rafting. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft togethe , Scotland

Eider Drake and female (Somateria mollissima) calling and interacting in raft with sun setting. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

Eider Drake (Somateria mollissima) wing flapping, back facing in raft. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together , Scotland

Eider duck (Somateria mollissima), male and female. Eider rafting in the winter as the sun sets

Eider Drake (Somateria mollissima) calling. Eiders raft together in winter, the males all squabbling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

Eider Drake and female (Somateria mollissima) calling and flapping wings in winter raft. Eiders raft together in winter, the males all squabiling together, preening, diving and flapping. Eiders come from all over to raft together, Scotland

A raft makes its way past a small aqua blue icebergs on Alsek lake during a 12 day rafting trip down the Tatshenshini and Alsek rivers.