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.

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 perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

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

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.

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

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

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

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

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

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.

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

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

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

Jeff Foott / Wild California condor (Gymnogyps californianus) near San Pedro Martir National Park, Northern Baja California, Mexico.

Guy Edwardes / African fish eagle (Haliaeetus vocifer), Savuti, Botswana.

Sergey Gorshkov / Northern goshawk (Accipiter gentilis) flying with squirrel prey, Finland . March

Sergey Gorshkov / Northern goshawks (Accipiter gentilis) fighting over squirrel carcass, Finland, March.

Danny Green / Osprey (Pandion haliaetus) in flight catching a fish, Finland, July

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Danny Green / Bald eagle (Haliaeetus leucocephalus) head portrait, Alaska, USA, February

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Markus Varesvuo / Golden eagle (Aquila chrysaetus) landing, Kuusamo, Finland, January.

Markus Varesvuo / Golden eagle (Aquila chrysaetus) Kuusamo, Finland, January.

George Sanker / Osprey (Pandion haliaetus) with two Alewife (Alosa pseudoharengus) just caught in the Atlantic Ocean. Acadia National Park, Maine, USA. June.

Michel Roggo / View of African fish eagle (Haliaeetus vocifer),from underwater, trying to catch a fish on the surface, Okavango Delta, Botswana, June. Photographed for The Freshwater Project

John Waters / Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels, England, UK, December.

Ann & Steve Toon / African fish eagle (Haliaeetus vocifer) flying, Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

Christophe Courteau / White backed vulture (Gyps africanus) feeding, Linyanti Game Reserve, Botswana.

SCOTLAND: The Big Picture / Female Golden eagle (Aquila chrysaetos) feeding its chick in a nest in a pine tree, Glen Tanar, Cairngorms National Park, Scotland, UK, June.

Tui De Roy / Galapagos hawk (Buteo galapagoensis) landing, Galapagos, Ecuador. Vulnerable species.

Tui De Roy / Galapagos hawk (Buteo galapagoensis) in flight, Galapagos, Ecuador. Vulnerable species.

Tui De Roy / Galapagos hawk (Buteo galapagoensis) perched over sulphurous slope, Galapagos, Ecuador. Vulnerable species.

Francisco Marquez / Griffon vultures (Gyps fulvus) and European black vultures (Aegypius monachus) feeding on a dead deer, Cabaneros National Park, Montes de Toledo, Spain, May.

Francisco Marquez / Juvenile Lammergeier (Gypaetus barbatus) feeding on a bone in snow, Ordesa y Monte Perdido National Park, Spain, April.

Gerrit Vyn / Mature male California Condor (Gymnogyps californianus) used for the captive breeding program to restore this critically endangered species. Idaho. February.

David Tipling / Bearded vulture (Gypaetus barbatus) adult swallowing leg bone along with hoof, Spanish Pyrenees, July. This bird swallowed five of these leg bones whole, they have the ability to dissolve the bone in...

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

SCOTLAND: The Big Picture / Osprey (Pandion haliaetus) male flying with talons outstretched, Glenfeshie, Cairngorms National Park, Scotland, UK, May.

David Kjaer / Griffon vulture (Gyps fulvus) coming in to land, Spain, July

David Kjaer / Bearded vulture (Gypaetus barbatus)) coming in to land, Spain, July

Luke Massey / Black kites (Milvus migrans) flying above man as he throws food skyward from a rooftop. Old Delhi, India. February 2016. Finalist in the Urban category of the Wildlife Photographer of the Year Awards...

Neil Aldridge / African fish eagle (Haliaeetus vocifer) flying, Selinda Spillway, northern Botswana.

Neil Aldridge / African fish eagle (Haliaeetus vocifer) standing on the banks of the Chobe River, Chobe National Park, Botswana.

Neil Aldridge / White-backed vultures (Gyps africanus) feed on a wildebeest carcass, Chobe, Botswana, August.

Neil Aldridge / Martial eagle (Polemaetus bellicosus) preening itself after a summer rainstorm in the central district, Kruger National Park. South Africa. Vulnerable species.

Peter Cairns / Golden eagle (Aquila chrysaetos) feeding on red deer carcass, Assynt, Scotland. Highly commended in the Habitat category of the BWPA (British Wildlife Photography Awards) 2016.

Bence Mate / Juvenile White tailed sea eagles (Haliaeetus albicilla) fighting for fish in mid air, Lake Csaj, Kiskunsagi National Park, Hungary. February.

Bence Mate / White tailed sea eagle (Haliaeetus albicilla) interacting with Great egret (Ardea alba) Lake Csaj, Kiskunsagi National Park, Hungary. January.

Bence Mate / Hooded crow (Corvus cornix) mobbing Buzzard (Buteo buteo) Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / White tailed eagles (Haliaeetus albicilla) juveniles in flight, Lake Csaj, Kiskunsagi National Park, Hungary. January.

Bence Mate / Herring gull (Larus argentatus) mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / Two Buzzards (Buteo buteo) fighting, Lake Csaj, Kiskunsagi National Park, Hungary. February.

Bence Mate / White tailed eagle (Haliaeetus albicilla) with fish in beak , Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / Gull mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / White tailed eagle (Haliaeetus albicilla) juvenile feeding on fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Bence Mate / White tailed sea eagle (Halieetus albicilla) juvenile and adult calling on lake shore, Lake Csaj, Kiskunsagi National Park, Hungary. February.

Bence Mate / White tailed sea eagle (Haliaeetus albicilla) and Hooded crow (Corvus cornix) in snow, Lake Csaj, Kiskunsagi National Park, Hungary. January.

Bence Mate / Juvenile White tailed eagle (Haliaeetus albicilla)in flight, with Hooded crow (Corvus cornix) mobbing it, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / White tailed eagles (Haliaeetus albicilla) two juveniles fighting in flight, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / Black vulture (Coragyps atratus) squabbling with King vulture (Sarcoramphus papa) Costa Rica.

Bence Mate / Black vulture (Coragyps atratus) face to face with King vulture (Sarcoramphus papa) Costa Rica.

Bence Mate / White tailed eagle (Haliaeetus albicilla) juvenile feeding on fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

David Pattyn / Martial eagle (Polemaetus bellicosus) perched on a branch. Masai Mara National Reserve, Kenya, Africa, August.

David Pattyn / Bearded vulture (Gypaetus barbatus) flying, Leukerbad, Valais, Switzerland, February

Espen Bergersen / Silhouette of White-tailed eagle (haliaeetus albicilla) sitting on coastal rocks, Kvaloya, Troms, Norway, October.

Hermann Brehm / Montagu's Harrier (Circus pygargus) female landing, Germany.

Wim van den Heever / White tailed eagle (Haliaeetus albicilla) caught in a fight. Hokkaido Japan, March.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) group of three fighting, Hokkaido Japan, March.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) flying looking over shoulder, Hokkaido Japan.

Juan Carlos Munoz / Bateleur eagle (Terathopius ecaudatus) head portrait, Captive, occurs in Africa.

Markus Varesvuo / Golden eagle (Aquila chrysaetos) plucking Capercaillie (Tetrao urogallus) Kuusamo, Finland, April.

Ben Hall / Steppe eagle (Aquila nipalensis) in flight against autumn colours, Czech Republic, November. Captive.

Ben Hall / White-tailed eagle (Haliaeetus albicilla) in flight over mountain landscape at dusk, Iceland, January.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) in flight, Hokkaido, Japan, March.

Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) two fighting over fish watched by White tailed sea eagle (Haliaeetus albicilla) Hokkaido, Japan, February.

Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) in flight, Hokkaido, Japan, February.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) feeding on fish on pack ice, Hokkaido, Japan, February.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) in flight landing, Hokkaido, Japan, February.

Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) standing on pack ice, Hokkaido, Japan, February.

Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) landing on pack ice, Hokkaido, Japan, February.

Bence Mate / Osprey (Pandion haliaetus) in flight with nesting material, Hungary, July. Nominated in the Telephoto category of the Terre Sauvage Nature Images Awards competition 2015.

Bence Mate / White-tailed Eagle (Haliaeetus albicilla) flying, with Great egret (Ardea alba) in the foreground, Lake Csaj, Pusztaszer, Hungary. February. Winner of the Portfolio category of the Terre Sauvage Natur...

Danny Green / White-tailed eagle (Haliaeetus albicilla) in flight, Norway, August

Danny Green / White-tailed eagle (Haliaeetus albicilla) in flight at sunset, Norway, August

Neil Aldridge / Martial eagle (Polemaetus bellicosus) flying, Kruger National Park, South Africa.

Staffan Widstrand / Eurasian griffon vulture (Gyps fulvus) blurred motion photograph at wildlife watching and vulture feeding site, Pre-Pyrenees, Catalonia, Spain, March.