Erlend Haarberg / Male Long-tailed duck (Clangula hyemalis) in flight, just after taking off, Myvatn, Iceland, June

David Tipling / Blackcap (Sylvia atricapilla) illegally trapped on limestick for use as ambelopulia, a traditional dish of songbirds, Cyprus, September 2011

Roger Powell / Northern gannet (Morus bassanus) taking off in flight, Great Saltee Island, Wexford, Republic of Ireland, June

Konrad Wothe / Blue-chested hummingbird (Amazilia amabilis) male feeding from flower, Costa Rica, Central America

Erlend Haarberg / Two Snow buntings (Plectrophenax nivalis) in flight, Iceland, March

Erlend Haarberg / Male Black-tailed godwit (Limosa limosa islandica) in flight, Iceland, June

Erlend Haarberg / Kittiwake (Rissa tridactyla) in flight, Iceland, May

Erlend Haarberg / Male Brambling (Fringilla montifringilla) in flight, Norway, May

Erlend Haarberg / Arctic tern (Sterna paradisaea) in flight, Iceland, June

Erlend Haarberg / Male Long-tailed duck (Clangula hyemalis) in flight, low over water, Myvatn, Iceland, June

Erlend Haarberg / Long-tailed duck (Clangula hyemalis) landing on water, Myvatn, Iceland, June

Erlend Haarberg / Kittiwake (Rissa tridactyla) in flight over water, Iceland, May

Erlend Haarberg / Sparrowhawk (Accipiter nisus) in flight, Sweden, October

Mike Read / Northern / Hall's giant petrel (Macronectes halli) on the sea with wings raised, New Zealand

Bryan and Cherry Alexander / Galapagos hawk (Buteo galapagoensis) in flight. Punta Suarez, Espanola, Galapagos, January.

Guy Edwardes / Chough (Pyrrhocorax pyrrhocorax) in flight, Great Saltee, County Wexford, Republic of Ireland, June

Bernard Castelein / Greylag Goose (Anser anser) in flight, Texel, the Netherlands

John Cancalosi / Ring-billed gull (Larus delawarensis) in flight, New York, USA

John Cancalosi / Ring-billed gull (Larus delawarensis) in flight, New York, USA

Shattil & Rozinski / Hen / Northern harrier (Circus cyaneus) flying, Cherry Creek State Park, Denver, Colorado, USA

Shattil & Rozinski / Juvenile Peregrine falcon (Falco peregrinus) perched on wall flapping wings, captive, Denver, Colorado, USA

Shattil & Rozinski / Green jay (Cyanocorax yncas) preparing to fly, Lower Rio Grande Valley wildlife corridor, South Texas, USA

Tim Laman / Brown pelican (Pelecnus occidentalis) coming in to land. La Jolla, California.

Tim Laman / Buzz Hall with a Red-shouldered hawk (Buteo lineatus) Marin Headlands, California. Oct 2002.

John Cancalosi / Ring-billed gull (Larus delawarensis) adult in flight, NY, USA

John Cancalosi / Ring-billed gull (Larus delawarensis) adults in flight, NY, USA

John Cancalosi / Adult Yellow-footed gull (Larus livens) flying, Sonora, Mexico

John Cancalosi / Adult Brown pelican (Pelecanus occidentalis) flying over seaside harbor, Sonora, Mexico

John Cancalosi / Adult Brown pelican (Pelecanus occidentalis) landing on water, Sonora, Mexico

John Cancalosi / Adult Yellow-footed Gull (Larus livens) flying, Sonora, Mexico

John Cancalosi / Adult Heermann's gull (Larus heermanni) flying, Soaring, Mexico

John Cancalosi / Adult Yellow-footed gull (Larus livens) flying, Sonora, Mexico

John Cancalosi / Adult Heermann's Gull (Larus heermanni) flying, Sonora, Mexico

TJ Rich / White headed vulture flying (Trigonoceps occipitalis) South Luangwa NP, Zambia

Bernard Castelein / Nazca / Masked booby (Sula dactylatra granti) in flight, Galapagos, Ecuador

Richard Du Toit / Cape vulture (Gyps coprotheres) with wings outstretched, Giant Castle NP, South Africa

Richard Du Toit / Cape vulture (Gyps coprotheres) in flight, Giant Castle NP, South Africa

Tom Vezo / Male Broad billed hummingbird at flower {Cynanthus latirostris}, Arizona, USA

Shattil & Rozinski / Juvenile Peregrine falcon {Falco peregrinus} landing on roof, Denver, Colorado, USA

DAVID TIPLING / Coot {Fulica atra} in flight, UK.

Richard Du Toit / Black kite {Milvus migrans} perched, sunning, Moremi WR, Botswana

DAVID TIPLING / Little gull {Hydrocoloeus minutus} adult in breeding plumage hovering, Finland.

Tom Vezo / Turkey vulture {Cathartes aura} sunning on cardon cactus, Sonora, Mexico

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

Tom Vezo / Female Black chinned hummingbird {Archilochus alexandri}, Arizona, USA

Tom Vezo / Female Black chinned hummingbird {Archilochus alexandri}, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} hovering, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

Tom Vezo / Female Black chinned hummingbird feeding {Archilochus alexandri}, Arizona, USA

Tom Vezo / Female Black chinned hummingbird {Archilochus alexandri}, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

Tom Vezo / Male Black chinned hummingbird {Archilochus alexandri} at flowers, Arizona, USA

DAVID TIPLING / Northern gannet (Morus bassanus) in flight, Saltee Island, Wexford, Republic of Ireland.