Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, Norway, August.

Pal Hermansen / Close up of Goshawk (Accipiter gentilis) feathers, with one foot held up, Trondelag, Norway. Winner of the Attention to Detail Category of the Bird Photographer Competition 2019.

Jami Tarris / Golden Eagle (Aquila chrysaetos) huntress, Altai Mountains, Bayan Ulgii, Mongolia

Guy Edwardes / Barn owl (Tyto alba) in flight above post and wildflowers, in morning light. The Hawk Conservancy Trust, Hampshire, England, UK. July. Captive.

Claudio Contreras / California condor (Gymnogyps californianus), portrait. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Claudio Contreras / California condor (Gymnogyps californianus), two peched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Jack Dykinga / Burrowing owl (Athene cunicularia) female and ten chicks aged a few weeks. Marana, Arizona, USA. May.

Jack Dykinga / Greater roadrunner (Geococcyx californianus) running to feed brood with Lizard prey in beak. Catalina State Park, Sonoran Desert, Arizona, USA. June.

George Sanker / Great egret (Ardea alba) with prey in beak, in evening light. Myakka River State Park, Florida, USA, March. Sequence 2/2.

George Sanker / Great egret (Ardea alba) diving head into water to catch prey, in evening light. Myakka River State Park, Florida, USA, March. Sequence 1/2.

Staffan Widstrand / Tawny eagle (Aquila rapax) in flight, about to land, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Sven Zacek / Ural owl (Strix uralensis) hunting, Tartumaa county, Southern Estonia.

Sven Zacek / Ural owl (Strix uralensis) in flight, hunting, Tartumaa county, Southern Estonia. February.

Sven Zacek / Ural owl (Strix uralensis) nestling, Tartumaa county, Southern Estonia. May.

Jack Dykinga / Bald eagle (Haliaeetus leucocephalus) perched as Snow geese (Chen caerulescens) fly by, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.

Ernie Janes / Bald eagle (Haliaeetus leucocephalus) portrait, captive, occurs in North America.

Winfried Wisniewski / Black Kite (Milvus migrans) flying, Castile-La Mancha, Spain

John Chan / Great horned owl (Bubo virginianus) chicks stretching and flapping their wings, Southern California, USA, May.

John Chan / Great horned owl (Bubo virginianus) chick watching for parents to return with food, Southern California, USA, June.

John Chan / Peregrine falcon (Falco peregrinus) plucking Dowitcher (Limnodromus) prey, Southern California, USA.

John Shaw / Western screech owl (Megascops kennicottii) is camouflaged as it looks from a tree cavity. Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.

John Shaw / Osprey (Pandion haliaetus) with Atlantic needlefish (Strongylura marina) it has caught. Blue Cypress Lake, Florida, USA, April.

Andy Rouse / Barn owl (Tyto alba) hunting with sunset light on wings, UK. March.

Jack Dykinga / Burrowing owls (Athene cunicularia) one moving its head - with blurred motion. Marana, Arizona, USA, November.

John Cancalosi / Great horned owl (Bubo virginianus) chick stretching its wings in nest in a Saguaro (Carnegiea gigantea), is groomed by its parent, Sonoran Desert, Arizona, USA, May.

SCOTLAND: The Big Picture / Golden eagle (Aquila chrysaetos) adult with nest material on eyrie with chick showing background, Isle of Lewis, Scotland, UK., May.

Sandesh Kadur / Slow motion clip of Amur falcons (Falco amurensis) congregating at roost site during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.

Sandesh Kadur / Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.

Sandesh Kadur / Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.

Bernard Castelein / Spotted owlet ( Athena brama), Keoladeo NP, Bharatpur, India

Marie Read / Snowy Owl (Nyctea scandiaca) female perched, Amherst Island, Ontario, Canada, January.

Marie Read / Arctic terns (Sterna paradisaea), two in flight over nesting colony in field of buttercups (Ranunculus sp.), Keflavik, Iceland. Digital canvas expansion.

David Pattyn / Bearded vulture (Gypaetus barbatus) in flight over winter landscape with snow, Leukerbad, Vallais, Wallis, Switzerland, January

David Pattyn / Bearded vulture (Gypaetus barbatus) in flight over winter landscape with snow, Leukerbad, Vallais, Wallis, Switzerland, January

David Pattyn / Golden eagle (Aquila chrysaetos) in flight in front of a vertical rocky mountain side, Gran Paradiso National Park, Aosta Valley, Italy, May

Alan Murphy/ BIA / Barn Owl (Tyto alba) flying with rodent prey, Texas

Alan Murphy/ BIA / Harris' Hawk (Parabuteo unicinctus) flying, Texas

Alan Murphy/ BIA / Great Horned Owl (Bubo virginianus), Texas

Alan Murphy/ BIA / Northern Caracara (Caracara cheriway) pair fighting, Texas

Alan Murphy/ BIA / Belted Kingfisher (Megaceryle alcyon) fishing, Texas

Martin Grimm/ BIA / Eurasian Kestrel (Falco tinnunculus) male flying, Baden-Wurttemberg, Germany

Alan Murphy/ BIA / Bald Eagle (Haliaeetus leucocephalus) fishing, Alaska

Alan Murphy/ BIA / Bald Eagle (Haliaeetus leucocephalus) fishing, Alaska

David Gallan / Slow motion clip of a Wedge-tailed eagle (Aquila audax) landing in nest, Mimosa National Park, New South Wales, Australia , September.

Markus Varesvuo / Pygmy owl (Glaucidium passerinum) perched in lichen covered tree. Helsinki, Finland. February.

Karine Aigner / Cuban bare-legged owl (Margarobyas lawrencii) perched, Cienaga de Zapata, Cuba.

Karine Aigner / Cuban bare-legged owl (Margarobyas lawrencii) in nest hole. Cienaga de Zapata, Cuba.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) perched in snow covered tree. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight over snow. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Juan Carlos Munoz / Griffon vulture (Gyps fulvus) landing on coast next to flock. Cantabria, Spain, March.

Sven Zacek / Eurasian pygmy owl (Glaucidium passerinum) perched on snow covered branch in evening light. Vorumaa, Southern Estonia. November.

Sven Zacek / White-tailed sea eagle (Haliaeetus albicilla) flying over frost and snow covered forest. Tartumaa, Southern Estonia. January 2011.

Sven Zacek / Ural owl (Strix uralensis) female on nest, male landing with twig in beak. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) male presenting prey to nesting mate. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) female feeding at nest on rodent prey presented by mate. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) female on the nest with nestling hidden under wing. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) female stretching wings whilst perched in Spruce (Picea sp) tree. Tartumaa, Southern Estonia. May.

Sven Zacek / Ural owl (Strix uralensis) female and nestling on nest in tree stump. Tartumaa, Southern Estonia. May.

Sven Zacek / Ural owl (Strix uralensis) female on nest after snowfall. Tartumaa, Southern Estonia. March.

Sven Zacek / Ural owl (Strix uralensis) female on nest in tree stump. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) female in flight having taken off from nest, in evening light. Tartumaa, Southern Estonia. May.

Sven Zacek / Ural owl (Strix uralensis) female flying with prey in beak. Flying back to nest in evening light. Tartumaa, Southern Estonia. May.

Sven Zacek / Ural owl (Strix uralensis) perched on Alder (Alnus sp) tree at dusk. Tartumaa, Southern Estonia. April.

Pedro Narra / Little owl (Athene noctua) Sado Estuary, Portugal. June

Pedro Narra / Barn Owl (Tyto alba) chicks in nest, Sado Estuary, Portugal . June

Jack Dykinga / Greater roadrunner (Geococcyx californianus) with Desert spiny desert lizard (Sceloporus magister) prey, Catalina State Park, Arizona, Sonoran Desert, USA. August.

Jack Dykinga / Burrowing owl (Athene cunicularia) at sunset, standing on one leg, Marana, Sonoran Desert, Arizona, USA. October.

Jack Dykinga / Burrowing owl (Athene cunicularia) with head turned to one side, Marana, Sonoran Desert, Arizona, USA. October.

Donald M. Jones / Great Gray Owl (Strix nebulosa), Yaak, Montana

SCOTLAND: The Big Picture / Osprey (Pandion haliaetus) fishing. Rothiemurchus, Cairngorms National Park, Scotland, UK.

David Perpinan / Group of Griffon vultures (Gyps fulvus) fighting to feed on a dead lamb. Cuenca, Spain, August.

David Perpinan / Group of Griffon vultures (Gyps fulvus) arriving and feeding on a dead lamb, Cuenca, Spain, August.

Ann & Steve Toon / Spotted eagle owl (Bubo africanus) subadult at nigh by water, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Tim Fitzharris / Atlantic Sailfish (Istiophorus albicans) and Magnificent Frigatebird (Fregata magnificens) flock hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico

Chase Dekker / Great Gray Owl (Strix nebulosa), Grand Teton National Park, Wyoming

Nick Garbutt / Bearded vulture (Gypaetus barbatus) in flight with the out-of-focus moon behind. Ladakh, Himalayas, northern India.

Jack Dykinga / Burrowing owl (Athene cunicularia), two huddled together. Marana, Pima County, Arizona, USA.

John Chan / Osprey (Pandion haliaetus) feeding on a fish, perched on a dead branch, Bolsa Chica Ecological Reserve, California, USA, October.

David Tipling / Barn owl(Tyto alba) flying, North Norfolk, England, UK. february

David Allemand / Snowy owl (Bubo scandiacus) female landing in the snow, Quebec, Canada, March.

David Allemand / Snowy owl (Bubo scandiacus) Female landing in the snow, Quebec, Canada

Staffan Widstrand / Wild Wonders of China / Chinese Sparrowhawk (Accipiter soloensis) flying Guangshui, Hubei province, China. July.

Felis Images / Spotted owlets (Athene brama) group of juveniles, Tamil Nadu, India.

Sergey Gorshkov / Minden / Northern Goshawk (Accipiter gentilis) feeding on Black Grouse (Tetrao tetrix) female in winter, Finland

Michael Quinton / Northern Hawk Owl (Surnia ulula) pair at nest, Alaska

Michael Quinton / Northern Hawk Owl (Surnia ulula) peering from nest, Alaska

Michael Quinton / Northern Hawk Owl (Surnia ulula) parent with chicks at nest, Alaska

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) flying, Lofoten, Norway, August.

Hermann Brehm / Sparrowhawk (Accipiter nisus) male, Germany. December

Doug Gimesy / Jacky Hunt, specialist in bird rescue and rehabilitation, with two Boobook owls (Ninox boobook), which she is providing temporary accommodation for in her factory. These birds were evacuated from the...

Doug Gimesy / Jacky Hunt, a specialist in bird rescue and rehabilitation, with two Boobook owls (Ninox boobook), which she is providing temporary accommodation for in her factory. These birds were evacuated from th...

Hermann Brehm / Sparrowhawk (Accipiter nisus) male, perched, Germany. January

Hermann Brehm / Bee-eater (Merops apiaster) nuptial gift of insect prey, Hungary. June

Hermann Brehm / Red-footed falcon (Falco vespertinus) male female pair, Hungary. June

Hermann Brehm / Red-footed Falcon (Falco vespertinus) male preening, Hungary. June

Hermann Brehm / Red-footed Falcon (Falco vespertinus) pair mating, Hungary. June