Ole Jorgen Liodden / Atlantic puffin (Fratercula arctica arctica) in flight carrying sandeels and larger fish, Hornoya, Vardo, Norway, July.

Markus Varesvuo / Siberian Jay (Perisoreus infaustus) flying over snow covered ground, carrying acorn in beak, Kuusamo Finland, Scandinavia, March. Magic Moments book plate.

Markus Varesvuo / Siberian Jay (Perisoreus infaustus) flying over snow covered ground, carrying acorn in beak, Kuusamo Finland, Scandinavia, March.

Markus Varesvuo / European Magpie (Pica pica) in flight carrying fish prey in beak, Kuusamo, Finland, April

Markus Varesvuo / Hooded crow (Corvus cornix) flying with fish in beak, Finland, February

Duncan Usher / Sandwich Tern (Thalasseus sandvicensis) flying with sand eel in beak, Texel, Holland

Bence Mate / European roller (Coracias garrulus) carrying small insect prey in beak, whilst in flight, Pusztaszer, Kiskunsagi National Park, Hungary

Brent Stephenson / Male Australasian Gannet (Morus serrator) flying with seaweed for use as nesting material. Cape Kidnappers, Hawkes Bay, New Zealand, September.

Poinsignon and Hackel / Redstart {Phoenicurus phoenicurus} female flying to nest carrying prey, Lorraine, France

Andy Rouse / Puffin (Fratercula arctica) landing carrying Sand eels in beak, Fair Isle, Shetland Islands, UK

David Tipling / Falkland / Brown skua (Stercorarius antarcticus) in flight carrying a stolen Gentoo penguin egg (Pygoscelis papua) Sea Lion Island, Falklands

Wild Wonders of Europe / Rautiainen / White stork (Ciconia ciconia) on hay mound carrying some in its beak, Matsalu National Park, Estonia, May 2009

Wild Wonders of Europe / Elander / Bearded vulture (Gypaetus barbatus) carrying hoof in its beak, Serra de Beumort, Gerri de la Sal, Catalonia, Spain, November 2008

Wild Wonders of Europe / Möllers / Grey Heron (Ardea cinerea) carrying twig in beak in cormorant colony, Oosterdijk, Enkhuizen, Ijsselmeer, Netherlands, March 2009

Bernard Castelein / Painted Stork (Mycteria leucocephala) flying, carrying nesting material in beak, Keoladeo Ghana / Bharatpur NP, Rajasthan, India

Bernard Castelein / House crow {Corvus splendens} in flight carrying food in beak, Jamuna river, Agra, Uttar Pradesh, India

Kim Taylor / Spotted flycatcher (Muscicapa striata) carrying tortoiseshell butterfly prey in its beak. UK

Pete Oxford / Puffin carrying sand eels in beak (Fratercula arctica) Fair Isle, Shetland Isles Scotland

Jack Dykinga / Burrowing owl (Athene cunicularia) fledgling carrying mud in beak. Marana, Arizona, USA. May.

Jack Dykinga / Burrowing owl (Athene cunicularia) fledgling aged a few weeks carrying lump of mud in beak. Marana, Arizona, USA. May.

Jen Guyton / Biologist Eric Hallingstad carrying white-backed vulture (Gyps africanus) to the processing station, to fit it with a wing tag and GPS transmitter. Gorongosa National Park, Mozambique

Roger Powell / Carrion crow (Corvus corone) pursuing a Mew gull (Larus canus) carrying a frog in its beak. Kolvik, Porsanger fjord, Finnmark, Norway, May.

Nick Upton / House sparrow (Passer domesticus) male flying to its nest site under old roof tiles on a cottage carrying nest material in its beak, Wiltshire, UK, June.

Jack Dykinga / Cactus wren (Campylorhynchus brunneicapillus) carrying nest-building material in its beak for its nest amongst the sharp spines of a Chain cholla cactus (Cylindropuntia fulgida), Sonoran Desert near T...

Marie Read / Western grebe (Aechmophorus occidentalis), closeup of adult swimming with chicks riding on its back, Bear River Migratory Bird Refuge, Utah, USA, May.

Marie Read / Western grebe (Aechmophorus occidentalis), closeup of adult swimming with chicks riding on its back, Bear River Migratory Bird Refuge, Tuah, USA, May.

Wild Wonders of Europe / Widstrand / Herring gull (Larus argentatus) flying carrying Herring (Clupea harengus) in beak, Flatanger, Nord-Trondelag, Norway, February.

Pascal Pittorino / Magpie (Pica pica) in flight carrying an egg in its beak , Var, Provence, France, June

Michel Poinsignon / Great crested grebe (Podiceps cristatus) carrying chick on back, fish in beak, Remerschen, Luxembourg, May.

Markus Varesvuo / Siberian Jay (Perisoreus infaustus) flying carrying food in beak, Kuusamo Finland, Scandinavia, March.

Markus Varesvuo / Guillemot (Uria aalge) in flight carrying fish in beak, Norway, July

Markus Varesvuo / Indian roller (Coracias benghalensis) in flight, carrying insect prey in beak, Oman, March

Markus Varesvuo / Griffon vulture (Gyps fulvus) in flight, carrying nest material in beak, Spain, December

Markus Varesvuo / Red-throated Pipit (Anthus cervinus) carrying insect prey in beak, Norway, June

Markus Varesvuo / Lesser Black-backed Gull (Larus fuscus) carrying fish in beak, Kangasala Finland

Markus Varesvuo / Fieldfare (Turdus pilaris) flying, carrying berry in beak, high angle shot from below, Helsinki, Finland, march 2003. Sky modified

Markus Varesvuo / Great spotted Woodpecker (Dendrocopus major) flying with pine cone in beak, Finland

David Williams / Sandwich Tern (Thalasseus sandvicensis) flying with fish in its beak, Wales, United Kingdom

Lou Coetzer / Marabou stork (Leptoptilos crumeniferus) in flight carrying nesting material in beak, Okavango Delta, Botswana, August.

Eric Baccega / Griffon vulture (Gyps fulvus) in flight, carrying nest material in beak, Monfrague National Park, Unesco Biosphere Reserve, Extremadura, Spain, December 2013

Duncan Usher / Sandwich Tern (Thalasseus sandvicensis) flying with sand eel in beak, Texel, Holland

Michel Poinsignon / Puffin (Fratercula arctica) in flight, carrying sandeels in beak, Farne Islands, Northumberland, England, UK, July

Michel Poinsignon / Puffin (Fratercula arctica) in flight, landing, carrying sandeels in beak, Farne Islands, Northumberland, England, UK, July

Michel Poinsignon / Puffin (Fratercula arctica) in flight, landing, carrying sandeels in beak, Farne Islands, Northumberland, England, UK, July

Michel Poinsignon / Puffin (Fratercula arctica) in flight, landing, carrying sandeels in beak, Farne Islands, Northumberland, England, UK, July

Michel Poinsignon / Great spotted woodpecker (Dendrocopos major) on birch tree in winter, carrying a hazelnut in beak, Lorraine, France, March

Michel Poinsignon / Puffin (Fratercula arctica) in flight, landing, carrying sandeels in beak, Farne Islands, Northumberland, England, UK, July

Robert Thompson / Razorbill (Alca torda) adult carrying a beak full of sand eels, Saltee Islands, County Wexford, Republic of Ireland, June

Andrew Walmsley / Atlantic puffin (Fratercula arctica) with sandeels in beak, Inner Farne islands, Northumberland, June

Markus Varesvuo / Snowy Owl (Nyctea scandiaca) female in flight with rodent prey in beak, Utsjoki Finland July

Tui De Roy / Nazca booby (Sula granti) in flight, carrying a stone in its beak, possibly for nest-building. Punta Cevallos, Espanola Island, Galapagos Islands, Ecuador, May.

MYN / Stephane Hette / Hoopoe (Upupa epops) flying to nest hole in tree with insect prey in beak, France, June, meetyourneighboursproject.net

Nick Upton / Adult Grey heron (Ardea cinerea) flying with a twig in its beak for its tree top nest, Regent's Park, London, UK, February.

Erlend Haarberg / Horned / Slavonian grebe (Podiceps auritus) with reed in beak, Iceland, May

Markus Varesvuo / Feral pigeon (Columba livia) in flight carrying twig in beak, Helsinki, Finland, January

Roy Mangersnes / Bearded vulture (Gypaetus barbatus) in flight carrying sheep's leg bone in beak, Northern Spain, February

Bertie Gregory / 2020VISION / Sandwich tern (Thalasseus sandvicensis) flying with eel in beak, Brownsea Island, Dorset, England, UK, June

Alan Williams / Arctic Tern (Sterna paradisaea) in flight carrying fish in beak, Cemlyn Bay, Anglesey, North Wales, UK, July

Andrew Parkinson / 2020VISION / Adult Coot (Fulica atra) carrying nesting material in it's beak, Derbyshire, England, UK, April

Andrew Parkinson / 2020VISION / Adult Coot (Fulica atra) carrying nesting material in it's beak, Derbyshire, England, UK, April

Andy Sands / Starling (Sturnus vulgaris) on stone wall carrying a beak full of flies. Isle of Tiree, Scotland, June.

Bernard Castelein / Northern gannet (Morus bassanus) stalling in flight carrying seaweed for nest in beak, Helgoland, Germany, May

Bernard Castelein / Northern gannet (Morus bassanus) in flight carrying seaweed for nest in beak, Helgoland, Germany, May

Ingo Arndt / Horned Puffin (Fratercula corniculata) flying with fish in its beak, Lake Clark National Park, Alaska

Ingo Arndt / Horned Puffin (Fratercula corniculata) flying with fish in its beak, Lake Clark National Park, Alaska

Hermann Brehm / Great Spotted Woodpecker (Dendrocops major) about to land on a tree trunk, carrying a hazelnut in its beak. Bavaria, Germany, November.

Hermann Brehm / Great Spotted Woodpecker (Dendrocops major) about to land on a tree trunk, carrying a walnut in its beak. Bavaria, Germany, December.

Hermann Brehm / Great Spotted Woodpecker (Dendrocops major) about to land on a tree trunk, carrying a hazelnut in its beak. Bavaria, Germany, November.

Markus Varesvuo / Fieldfare (Turdus pilaris) flying carrying berry in beak, Finland, October

Donald M. Jones / Limpkin (Aramus guarauna) with a mussel in it's beak, Sarasota, Florida

Hermann Brehm / Eurasian Jay (Garrulus glandarius) carrying nut in beak, Germany

Jouan & Rius / White Stork (Ciconia ciconia) in flight carrying nesting material in beak, Alsace, Upper Rhine, France, May

Bernard Castelein / Sandwich Tern ( Sterna sandvicensis) carrying sandeel in beak, Europe

Poinsignon and Hackel / Common kingfisher {Alcedo atthis} female flying to nest with fish in beak, Lorraine, France

Bernard Castelein / Sandwich Tern (Thalasseus / Sterna sandvicensis) in flight carrying Sandeel in beak, Texel, the Netherlands

Andy Rouse / Puffin (Fratercula arctica) landing carrying Sand eels in beak, Fair Isle, Shetland Islands, UK

Andy Rouse / Puffin (Fratercula arctica) landing carrying Sand eels in beak, Fair Isle, Shetland Islands, UK

Andy Rouse / Puffin (Fratercula arctica) carrying Sand eels in beak for young, Fair Isle, Shetland Islands, UK

Andy Rouse / Common kingfisher (Alcedo atthis) flying up from water carrying fish in beak, UK

Andy Rouse / Common kingfisher (Alcedo atthis) leaving water carrying fish in its beak, UK

David Tipling / Blackbird {Turdus merula} male carrying insect grub in beak, Norfolk, UK, April

Mike Wilkes / Jay (Garrulus glandarius) on tree stump carrying acorn in its beak, Warwickshire, UK

Jeff Vanuga / Great egret (Ardea alba) in flight with nest material in beak, Florida, USA, March

Wild Wonders of Europe / Peltomäki / Common tern (Sterna hirundo) flying carrying fish in beak, Texel, Netherlands, May 2009

Wild Wonders of Europe / Geslin / Peregrine falcon (Falco peregrinus) flying past a spire of the Sagrada familia cathedral carrying prey (pigeon) in its beak, Barcelona, Spain, April 2009

Stephen Belcher / Atlantic Puffin (Fratercula arctica) with nest material in its beak, Shetland Islands, Scotland

Pete Oxford / Rockhopper penguin (Eudyptes chrysocome chrysocome) carrying a small pebble in its beak, Pebble Island, Falkland Islands

Wild Wonders of Europe / Lesniewski / Female Black redstart (Phoenicurus ochruros) carrying prey in its beak, Hohe Tauern National Park, Austria, July 2008

Donald M. Jones / Western Bluebird (Sialia mexicana) male with insect in beak, western Montana

Donald M. Jones / Western Bluebird (Sialia mexicana) female with caterpillar in beak, western Montana

Donald M. Jones / Western Bluebird (Sialia mexicana) female with insect in beak, western Montana

Donald M. Jones / Western Bluebird (Sialia mexicana) female at nest cavity entrance with insect in beak, western Montana

Donald M. Jones / Western Bluebird (Sialia mexicana) female with caterpillar in beak, western Montana

Donald M. Jones / Mountain Bluebird (Sialia currucoides) female with insect in beak, western Montana