Gray Heron (Grey Heron) (Ardea cinerea) drying a wing, Kruger National Park, South Africa, Africa

Woolly-necked Stork (Ciconia episcopus) drying its wings, Kruger National Park, South Africa, Africa

Australasian darter bird (Anhinga novaehollandiae), snake bird spreading wings, Australasian Darter drying wings, Poovar island, Kerala, India, Asia

Reed cormorants (Microcarbo africanus) drying wings, Chobe National Park, Botswana, Africa

An adult female anhinga, Anhinga anhinga, drying her wings in Tortuguero National Park, Costa Rica, Central America

An adult female anhinga, Anhinga anhinga, drying her wings in Tortuguero National Park, Costa Rica, Central America

Australasian darter bird (Anhinga novaehollandiae) drying wings, snake bird spreading wings, Poovar Island, Kerala, India, Asia

African darter (Anhinga rufa) drying wings, Chobe River, Botswana, Africa

Australasian darter bird (Anhinga novaehollandiae) drying wings, snake bird spreading wings, Poovar Island, Kerala, India, Asia

Adult Anhinga (Anhinga anhinga), drying its wings on the Rio Tres Irmao, Mato Grosso, Pantanal, Brazil, South America

Adult turkey vulture (Cathartes aura), drying its wings at Los Islotes, Baja California Sur, Mexico, North America

Adult turkey vulture (Cathartes aura), drying its wings, Sierra San Francisco, Baja California Sur, Mexico, North America

Adult Anhinga (Anhinga anhinga), drying its wings on the Rio Tres Irmao, Mato Grosso, Pantanal, Brazil, South America

Phalacrocorax carbo (cormorant) standing on a pole drying his wings at the sun, Parco del Delta del Po, Emilia Romagna, Italy, Europe

Anhinga snakebird darter, Anhinga anhinga, in the Everglades, Florida, United States of America

Anhinga snakebird darter, Anhinga anhinga, in the Everglades, Florida, United States of America

Blue-eyed shag or blue-eyed cormorant or Antarctic cormorant (Phalacrocorax atriceps) drying its wings, Paulete Island, Antarctic Peninsula, Antarctica, Polar Regions

Cormorant (Phalacrocorax carbo) standing on rock with light behind drying wings, sun setting.. Kilchrenan, on the banks of Loch Awe, Argyll,, Scotland, UK

Cormorant (Phalacrocorax carbo) standing on rock with light behind drying wings, sun setting.Water spray from wings.. Kilchrenan, on the banks of Loch Awe, Argyll,, Scotland, UK

Cormorant (Phalacrocorax carbo) standing on rock with light behind drying wings, sun setting.. Kilchrenan, on the banks of Loch Awe, Argyll,, Scotland, UK

Cormorant (Phalacrocorax carbo) standing on rock with light behind drying wings, sun setting.. Kilchrenan, on the banks of Loch Awe, Argyll,, Scotland, UK

Shag (Phalacrocorax aristotelis) portrait on old pier support. Taken at the top of Loch Etive in Glen Etive on an old pier. Shags feathers are not fully waterproof so they spend a lot of time preening and drying out of the water , Scotland

Cormorant (Phalacrocorax carbo) silhouetted against water while drying on an Island. Cormorant wings are not fully waterproof therefore they spend a lot of time on rocks, bouys etc drying off their wings.. Argyll, Scotland

Cormorant (Phalacrocorax carbo) standing on rock with light behind drying wings, sun setting.. Kilchrenan, on the banks of Loch Awe, Argyll,, Scotland, UK

Elderly traditional cormorant fisherman with his cormorant on the Li River, Xingping, China.

Great cormorant (Phalacrocorax carbo), sitting on a tree and drying its wings, Vorarlberg, Austria, Europe

Griffon Vulture (Gyps fulvus) drying wings after rain, Pyrenees mountains, Spain, Europe

Great Cormorant dries on a branch, Alsace France

Great Crested Grebe drying his wings in winter, Switzerland

Great Cormorant drying in autumn, Offendorf France