Dietmar Nill / European hornet (Vespa crabro) fanning nest with wings to regulate the temperature, Germany, September.

Ammonite / Close-up of a Buff-tailed bumble bee (Bombus terrestris) inside nest, nest building and fanning wings to keep the nest at the correct temperature, France, May.

Paul Williams / Black-thighed falconet (Microhierax fringillarius) male female pair with female fanning her feathers, Malaysia.

Dave Bevan / Male Common pheasant (Phasianus colchicus) fanning tail, displaying to another male to indicate dominance, Suffolk, England, UK, December.

Michel Roggo / Striped mullet (Mugil cephalus) in Fanning Springs State Park, Florida, USA. March. Photographed for The Freshwater Project

Michel Roggo / Striped mullet (Mugil cephalus) at boundary of clear water of Fanning Springs and red water of the Suwannee River, Fanning Springs State Park, Florida, USA. March 2011. Photographed for The Freshwater...

Charlie Summers / Brook trout (Salvelinus fontinalis) female fanning her tail as she digs a redd or nest in her spawning stream. Image taken in Rocky Mountain National Park of Colorado.

Charlie Summers / Greenback cutthroat trout (Oncorhynchus clarkii stomias) female fanning her tail whilst digging a redd or nest. Neota Wilderness Area, Colorado, USA. June.

Steve Downer / Close-up of a male Three spined stickleback (Gasterosteus aculeatus) fanning water over eggs in nest, May. Captive.

Steve Downer / Close-up of a male Three spined stickleback (Gasterosteus aculeatus) fanning water over eggs in nest, May. Captive.

Frederique Olivier / Pair of Black browed albatrosses (Thalassarche melanophris) courting, touching beaks and fanning tails, with Southern rockhopper penguins (Eudyptes chrysocome) in the foreground, New Island, Falkland...

Charlie Summers / Hippopotamus (Hippopotamus amphibius) defecating and urinating, fanning its tail to distribute the waste over a wide area, Selous Game Reserve, Tanzania.

Phil Savoie / European honey bee (Apis mellifera) worker at hive entrance emitting Nasonov pheromone from abdominal gland and fanning wings to spread the scent to returning workers, Monmouthshire, Wales, UK. Septem...

Dietmar Nill / European hornets (Vespa crabro) fanning nest with wings to regulate the temperature, Germany, September.

Nick Upton / Hornet (Vespa crabro) workers emerging from their nest in a hollow tree trunk, with one stopping to fan its wings in the entrance to ventilate the nest, Lower Woods Gloucestershire Wildlife Trust rese...

Alex Mustard / Red Sea anemonefish (Amphiprion bicinctus) fans oxygen rich water over its clutch of eggs with its pectoral fin. The eggs are close to hatching and laid next to the red skirt of a magnificent sea anem...

Nick Upton / Three Hornets (Vespa crabro) guarding nest entrance in hollow tree. One wing fanning to help cool it. Gloucestershire, UK, October.

David Tipling / Man holding up decorative Peacock (Pavo cristatus) feather fans to be sold to tourists in Jaipur, India, November 2010.

John Cancalosi / Rufous Tailed Hummingbird (Amazilia tzacatl) fanning tail. Costa Rica.

Paul D Stewart / Tiger complex mimics, (Heliconids), an old collection of butterflies in the famous 'tiger complex'. This is a group of around 200 species of mostly toxic South American species which share a similar p...

Nick Upton / Male Beautiful Demoiselle Damselfly (Calopteryx virgo) fanning its wings in a courtship display while standing on a riverside leaf. Wiltshire, UK, June.

Juergen Freund / Clarke Anemonefish (Amphiprion clarkii) fanning her eggs beside host anemone, Bali, Indonesia.

Juergen Freund / Clarke Anemonefish (Amphiprion clarkii) fanning her eggs, Bali, Indonesia, Indo-pacific.

Juergen Freund / Clarke Anemonefish (Amphiprion clarkii) fanning her eggs, Bali, Indonesia, Indo-pacific.

Nick Upton / Male Grasshopper (Stenobothrus rubicundulus) calling loudly by fanning its wings. Julian Alps, Slovenia, July.

GEORGETTE DOUWMA / Arabian picasso fish (Rhinecanthus assasi) fanning and guarding egg mass in nest. Red Sea

Stephen Dalton / Honey bee (Apis mellifera) worker bees fanning at hive entrance, UK

George Sanker / Great grey owl (Strix nebulosa) fanning tail feathers, Yellowstone National Park, Wyoming, USA, June

Nick Upton / Banded demoiselle damselflies (Calopteryx splendens) fanning wings as they mate in the wheel position, Wiltshire, UK, May

Jane Burton / Jewel cichlid {Hemichromis bimaculatus} fanning eggs on nursery stone, captive, from Africa, sequence 6/12

Jane Burton / Angelfish {Pterophyllum sp} female fanning her eggs, captive, from rivers of Amazon basin, South america

Gerry Ellis / Honey Bee (Apis mellifera) pair fanning wings, North America

John B Free / Honey bee {Apis mellifera} fanning its wings to cool the hive (Apis mellifera) UK

Kim Taylor / Cutout of Honey bee worker fanning to keep hive cool {Apis mellifera} UK

Kim Taylor / Male Three spined stickleback {Gasterosteus aculeatus} fans nest to supply eggs with oxygen, UK, Sequence 12/16

Tui De Roy / Buller's Albatross (Thalassarche bulleri) pair performing courtship dance which includes tail fanning, fake preening, bill touching and calling, endemic to New Zealand's southern islands, Snares Islan...

Tui De Roy / Buller's Albatross (Thalassarche bulleri) pair performing courtship dance which includes tail fanning, fake preening, bill touching and calling, endemic to New Zealand's southern islands, Snares Islan...

Joel Sartore / Photo Ark / Bigclaw crayfish (Faxonius placidus) female oxygenating eggs by fanning them, upper Duck River, Coffee County, Tennessee, USA. Controlled conditions.

David Tipling / Bearded Tit (Panurus biarmicus) male perched on reed whilst fanning tail, Cley, Norfolk, England, UK, October.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) hanging from branch, fanning itself on a hot day, Yarra River, Kew, Victoria, Australia. January.

Vishal Jadhav / Indian peafowl (Pavo cristatus) male fanning tail feathers, vibrating wing feathers and spinning in courtship display, Pune, India, July.

Vishal Jadhav / Indian peafowl (Pavo cristatus) male fanning tail feathers and shaking plumage as another male looks on, Pune, India, July.

Doug Wechsler / European hornet (Vespa crabro) worker fanning wings to cool nest in hollow tree, Merion Botanical Park, Pennsylvania, USA. September.

Doug Wechsler / European hornet (Vespa crabro) worker fanning wings to cool nest in hollow tree, Merion Botanical Park, Pennsylvania, USA. September.

Roland Seitre / Germain's peacock-pheasant (Polyplectron germaini) pair, male fanning feathers in courtship display, Vietnam. Captive.

Roland Seitre / Green peafowl (Pavo muticus) male, fanning feathers in courtship display, Vietnam. Captive. Endangered.

Roland Seitre / Ocellated turkey (Meleagris ocellata) male, fanning out plumage in courtship display, Netherlands. Captive, occurs in Central America.

Doug Gimesy / Grey-headed flying-fox bat (Pteropus poliocephalus) hanging from branch looking down with wing extended, Yarra Bend Park, Victoria, Australia. Cropped.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) fanning itself with wings to cool down, Kew, Victoria, Australia, February.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) hanging in a tree fanning with its wing and licking itself to cool down, Kew, Victoria, Australia, February.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) hanging in a tree fanning with its wing to cool down, Kew, Victoria, Australia, February.

David Fleetham / Oriental flying gurnard (Dactylopterus orientalis) spreading its enormous pectoral fins to form rounded, fanlike, wings, Hawaii, Pacific Ocean.

David Weiller / Close up shot revealing Brazilian Treehopper (Bocydium globulare) with interesting helmet (head appendage) fanning its wings whilst resting on leaf, Amazon rainforest, Puyo, Ecuador.

Ingo Arndt / Honey bees (Apis mellifera) workers at the entrance of the hive, fanning their wings to circulate and cool the air inside the hive, Germany.

Alex Mustard / Shallow depth of field photo of an adult saddleback anemonefish (Amphiprion polymnus) fanning eggs, laid on a stone near the base of the anemone. Dauin, Dumaguete, Negros, Philippines. Bohol Sea, Trop...

Ashish & Shanthi Chandola / White throated fantail flycatcher (Rhipidura albicolis albogularis) fanning tail. Bandipur National Park, Karnataka, India. March.

Ashish & Shanthi Chandola / White throated fantail flycatcher (Rhipidura albicolis albogularis) fanning tail. Bandipur National Park, Karnataka, India. March.

Nick Upton / Picture-winged fly / Banded spotwing (Melieria crassipennis) male displaying to females by fanning its wings on a riverbank rush, River Avon, Wiltshire, UK, July.