Frederique Olivier / Panning shot of Wilson's storm petrels (Oceanites oceanicus) perched on a rock, Antarctica.

David Tipling / Wilson's storm petrel (Oceanites oceanicus) flying over Southern Ocean off South Georgia, January

Hanne & Jens Eriksen / Wilson's storm petrel (Oceanites oceanicus) fluttering over the sea, yellow foot web visible, Oman, November

David Tipling / Wilson's storm petrel (Oceanites oceanicus) in flight over Southern Ocean. South Georgia.

Hanne & Jens Eriksen / Wilson's storm petrel (Oceanites oceanicus) in flight skimming the water, Oman, September

Frederique Olivier / Wilson's storm petrel (Oceanites oceanicus) on rock, Antarctica, November.

Frederique Olivier / Wilson's storm petrel (Oceanites oceanicus) on snow, Antarctica, December.

Frederique Olivier / Wilson's storm petrel (Oceanites oceanicus) on rock, Antarctica, November.

Frederique Olivier / Wilson's storm petrel (Oceanites oceanicus) on rock, Antarctica, November.

Brent Stephenson / Wilson's storm petrel (Oceanites oceanicus) bouncing off the water whilst feeding, showing rump and upperwing from behind. Cuverville Island, Antarctic Peninsula, Antarctica. December.