Yukihiro Fukuda / Masked booby (Sula dactylatra) parent shading chick from harsh sunlight at nest, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Masked booby (Sula dactylatra) parent and young with beaks gaping to cool down in harsh sunlight, Christmas Island, Indian Ocean, July

Yukihiro Fukuda / Lesser frigatebird (Fregata ariel) female sheltering chick from harsh sunlight, shading with wing, in nest on top of shrub near beach, Christmas Island, Indian Ocean, July

Tony Heald / Black heron / egret (Hydranassa / Egretta ardesiaca) umbrella feeding, using wings to shade water below, Chobe National Park, Botswana

Tony Heald / Black heron / egret (Hydranassa / Egretta ardesiaca) umbrella feeding, using wings to shade water below, Chobe National Park, Botswana

Christian Ziegler / Dichorisandra (Dichorisandra sp) arranges all leaves in one plane to avoid self shading, Barro Colorado Island, Panama

Hanne & Jens Eriksen / Sooty gull {Ichthyaetus hemprichii } providing shade for two eggs in nest, Oman, August

Jouan & Rius / Bushman San looking into the distance shading face with hand, Kalahari desert, Botswana

Ingrid Visser / Little Auk (Alle alle) pair on rock, Arctic

John Downer / Asian openbill storks {Anastomus oscitans} shading nests with wings, India

Rolf Nussbaumer / Killdeer plover {Charadrius vociferus} shading eggs on nest from the sun, Welder Wildlife Refuge, Sinton, Texas, USA.

Hermann Brehm / Three Black herons shading water with wings to fish {Egretta ardesiaca} Botswana

Paul Hobson / Shag {Phalacrocorax aristotelis} at nest, shading chick from the sun, Northumberland, UK.

Toby Sinclair / Banyan trees {Ficus religiousa} shading road, Aurangabad, Maharashtra, India

Tim Fitzharris / Atlantic Puffin (Fratercula arctica) standing on rock vocalizing, with tongue sticking out, New Brunswick, Canada

Michael & Patricia Fogden / Double-banded Courser (Rhinoptilus africanus) shading its egg which is camouflaged among antelope droppings, Etosha National Park, Namibia

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, in coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) portrait of adult in bright breeding colors, standing on coastal cliff, summer breeding season, Newfoundland, Canada

Tim Fitzharris / Common Murre (Uria aalge) perched on coastal rocks, Pribilof Islands, Alaska

Christian Ziegler / Dichorisandra (Dichorisandra sp) arranges all leaves in one plane to avoid self shading, Barro Colorado Island, Panama

Gerry Ellis / African Elephant (Loxodonta africana) keeper shading baby orphan Laibon with umbrella to protect skin, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Michael & Patricia Fogden / Double-banded Courser (Rhinoptilus africanus) shading its egg which is camouflaged among antelope droppings, Etosha National Park, Namibia

Flip de Nooyer / Hoatzin (Opisthocomus hoazin) parent shading chicks from sun, Guyana

Mike Potts / Temmincks courser shading eggs from sun {Cursorius temminckii} Gambia West Africa