Steve Knell / Bullfinch (Pyrrhula pyrrhula). Female perched on conifer, Norway, 2006

Steve Knell / Northern Bullfinch (Pyrrhula pyrrhula) male in snow, Norway, January 2007

Steve Knell / Coal tit {Periparus ater} Norway 2006

Steve Knell / Capercaillie (Tetrao urogallus) female in heather, Norway, May 2006

John Cancalosi / Red-winged Blackbird {Agelaius phoeniceus} male, NY, USA

John Cancalosi / Red winged Blackbird {Agelaius phoeniceus} female, NY, USA

John Cancalosi / Red winged Blackbird {Agelaius phoeniceus} female, New York, USA

John Cancalosi / Northern Cardinal {Cardinalis cardinalis} male, Pennsylvania, USA

Tom Vezo / Scaled quail (Callipepla squamata) Santa Rita Mountains, Arizona, USA

Shattil & Rozinski / Limpkin {Aramus guarauna} Florida, USA

Shattil & Rozinski / Evening grosbeak {Coccothraustus vespertinus} male, Colorado, USA

Shattil & Rozinski / Mourning dove {Zenaida macroura} Colorado, USA

Shattil & Rozinski / Black-billed magpie {Pica hudsonia} perched on Yucca stalk, Colorado, USA

Shattil & Rozinski / White tailed ptarmigan {Lagopus leucurus} winter plumage, USA

Shattil & Rozinski / Yellow headed blackbird {Xanthocephalus xanthocephalus} male, USA

Shattil & Rozinski / Southwestern willow flycatcher {Empidonax traillii extimus} USA

Shattil & Rozinski / Anna's hummingbird {Calypte anna} female on nest made of thread and other materials, Arizona, USA

TJ Rich / King Cormorant (Phalacrocorax albiventer) Falkland Islands

TJ Rich / Rockhopper penguin (Eudyptes chrysocome) Falkland Islands

TJ Rich / King Cormorant (Phalacrocorax albiventer) Falkland Islands

TJ Rich / Dark-faced ground tyrant (Muscisaxicola maclovianus) Falkland Islands

TJ Rich / Antarctic / Falkland skua on nest (Stercorarius antarcticus) Falkland Islands

TJ Rich / Rockhopper penguin (Eudytes crestatus) Falkland Islands

TJ Rich / Forster's striated caracara (Phalcoboenus australis) Falkland Islands

TJ Rich / Fossilized guano on volcanic rocks, Ascension Island

TJ Rich / Rockhopper penguin (Eudyptes chrysocome) Falkland Islands

John Cancalosi / Portrait of Red tailed hawk (Buteo jamaicensis) perched in branch, TX, USA

Peter Blackwell / Black bellied bustard {Lissotis melanogaster} Masai Mara, Kenya

Peter Blackwell / Lilac breasted roller {Coracias caudatus} Masai Mara, Kenya

John Cancalosi / Common Raven {Corvus corax} ruffling feathers, Arizona, USA.

John Cancalosi / Californian Condor {Gymnogyps californianus} preening feathers, with number tag, Arizona, USA.

Tom Vezo / Coppery tailed / Elegant trogon {Trogon elegans} male, Arizona, USA

Steve Knell / Woodchat shrike {Lanius senator} female, Greece

Richard Du Toit / Crested guineafowl {Guttera pucherani} Mkuzi GR, South Africa

Tom Vezo / Willow grouse {Lagopus lagopus} Churchill, Manitoba, Canada

Steve Knell / Little bustard {Tetrax tetrax} male, Spain

DAVID TIPLING / Red rumped swallow {Hirundo daurica} perched on wire, Lesbos, Greece

Shattil & Rozinski / Scissor tailed flycatcher {Tyrannus forficatus} Texas, USA

Shattil & Rozinski / Eastern kingbird {Tyrannus tyrannus} Colorado, USA

Shattil & Rozinski / Blue grosbeak {Passerina caerula} USA

Shattil & Rozinski / Peregrine falcon {Falco peregrinus} Denver, Colorado, USA. Wild foster mother of chicks hatched at Peregrine Fund, female had been injured, rehabilitated and released in previous year.

Shattil & Rozinski / Coppery tailed / elegant trogon {Trogon elegans} portrait, Arizona, USA

Shattil & Rozinski / Swainson's hawk {Buteo swainsonii} Colorado, USA

Shattil & Rozinski / Peregrine falcon {Falco peregrinus} perched in city, Denver, Colorado, USA

Tom Vezo / Female Red-winged blackbird {Agelaius phoeniceus} Long Island, NY, USA.

Tom Vezo / Red-shouldered Hawk {Buteo lineatus} head profile Everglades NL, Florida, USA.

Bernard Castelein / Masked booby (Sula dactylatra granti) standing on rock, Genovesa, Galapagos, Ecuador, South America, endemic subspecies

DAVID TIPLING / Portrait of Red-faced cormorant (Phalacrocorax urile), Bering Sea, Alaska, USA

Tom Vezo / Phainopepla (Phainopepla nitens) male perched on branch, Arizona, USA

Tom Vezo / Portrait of Scissor tailed flycatcher (Tyrannus forficatus) perched in branch, Texas, USA

DAVID TIPLING / Broad billed motmot {Electron platyrhynchum} Metro Park, Panama City, Panama.

DAVID TIPLING / Male Rufous-crested Coquette {Lophornis delattrei} El Valle, Panama.

DAVID TIPLING / Rufous Motmot {Barypthengus martii semirufus} perching on branch, Canopy Lodge, El Valle, Panama.

DAVID TIPLING / Male Rufous-crested Coquette {Lophornis delattrei lessoni} El Valle, Panama.

DAVID TIPLING / Rufescent tiger heron {Tigrisoma lineatum} head profile amongst vegetatition, Panama.

John Cancalosi / Speckled tanager {Tanager guttata} Costa Rica

Mike Read / Chestnut breasted coronet {Boissonneaua matthewsii} perched, San Isidro, Ecuador.

Mike Read / Chestnut breasted coronet {Boissonneaua matthewsii} San Isidro, Ecuador

Tom Vezo / Long billed thrasher {Toxostoma longirostre} on prickly pear cactus, Rio Grande Valley, Texas

DAVID TIPLING / Snowy-bellied Hummingbird {Amazilia edward} El Valle, Panama.

DAVID TIPLING / Female Slaty tailed Trogon {Trogon massena hoffmanni} Metro Park, Panama City, Panama

Richard Du Toit / Fiscal shrike {Lanius collaris} Gauteng, South Africa

Mike Read / Andean gull flying {Chroicocephalus serranus} Cotopaxi, Ecuador

John Cancalosi / Northern gannet colony {Morus bassanus} UK

Mike Read / Redstart, autumn plumage {Phoenicurus phoenicurus} Norfolk, UK

John Cancalosi / Mallee ringneck parrot portrait {Barnardius zonarius barnardi} Australia

John Cancalosi / Mallee ringneck parrot portrait {Barnardius zonarius barnardi} Australia

John Cancalosi / Common crane portrait {Grus grus} Europe, captive

John Cancalosi / Bokmakierie singing {Telophorus zeylonus} South Africa

John Cancalosi / Wattled crane portrait {Bugeranus carunculatus} South Africa, endangered

Mike Read / European cuckoo juvenile at bird bath {Cuculus canorus} UK

John Cancalosi / Ocellated turkey male portrait (Meleagris ocellata) Guatemala

Tom Vezo / Female Anna Hummingbird {Calypte anna} sitting on nest, California, USA

Tom Vezo / White crowned sparrow perched (Zonotrichia leucophrys). Bosque del Apache NWR, NM, USA.

Hermann Brehm / Scarlet macaws {Ara macao} and Blue and yellow macaws {Ara ararauna} on clay lick. Tambopata, Peru

DAVID TIPLING / Cock-of-the-rock {Rupicola peruvianus} male at lek in cloud forest, Manu Biosphere Reserve, Peru.

Mike Read / Greater flamingoes in flight {Phoenicopterus ruber} Camargue, France

John Cancalosi / Takahe (Phorphyrio hochstetteri) New Zealand

John Cancalosi / White stork chick and adults at nest {Ciconia ciconia} Spain

Martin Camm / Carwardine / Illustration of Adelie Penguin (Pygoscelis adeliae), Spheniscidae (Wildlife Art Company).

John Cancalosi / Juvenile Gyrfalcon (Falco rusticolus) captive, Wyoming, USA, July

John Cancalosi / Adult Gyrfalcon (Falco rusticolus) captive, Wyoming, USA, July

John Cancalosi / Adult Gyrfalcon (Falco rusticolus) captive, Wyoming, USA, July

John Cancalosi / Adult Gyrfalcon (Falco rusticolus) captive, Wyoming, USA, July

John Cancalosi / Adult Gyrfalcon (Falco rusticolus) captive, Wyoming, USA, July

Mike Read / Northern bald / Hermit ibis {Geronticus eremita} ringed individual, Pera Marsh, Algarve, Portugal, Critically endangered species, re-introduced to Portugal, February

Mike Read / Yellow-legged gull (Larus michahellis) on cliff top, Armacao de Pera, Algarve, Portugal, March

Mike Read / Wood lark (Lullula arborea) on rock, Asco Valley, Corsica, France, April

Mike Read / Northern bald / Hermit ibis {Geronticus eremita} ringed individual, Pera Marsh, Algarve, Portugal, Critically endangered species, re-introduced to Portugal, February

Mike Read / African crowned hornbill {Tockus alboterminatus} perched in tree, Umfolozi Game Reserve, South Africa

Mike Read / Violet-green swallow (Tachycineta thalassina) perched on wire, Yellowstone National Park, Wyoming, USA, June

Mike Read / Sentinal rock thrush {Monticola explorator} male perched on rock, Lesotho, November

Mike Read / Karoo / Spotted prinia {Prinia maculosa} perched in scrub, Lesotho, November

Mike Read / Buff-streaked chat {Oenanthe bifasciata} male perched on rock, Wakkestroom, South Africa, November

Tim Laman / Marquesan Imperial Pigeon (Ducula galeata) Nuku Hiva Island, Marquesas Islands, French Polynesia. IUCN Red List: Critically Endangered

Tim Laman / Wattled Honeyeater (Foulehaio carunculata) on Torch ginger flower. Viti Levu Island, Fiji.