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

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

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

Staffan Widstrand / Bonelli's eagle or Eurasian hawk-eagle, Hieraetus fasciatus or Aquila fasciata, picture taken from hide, at a feeding station for conservation purposes, utillizing live domestic pigeons caught as pest...

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

Peter Waechtershaeuser / Changeable Hawk-Eagle (Spizaetus cirrhatus), Sri Lanka

Luiz Claudio Marigo / Black hawk eagle {Spizaetus tyrannus} Endangered sapecies, captive South America

Neil Lucas / Head portrait Blyth's hawk eagle (Nisaetus alboniger) Singapore Captive Jurong Bird

John Downer / African hawk eagle head portrait {Hieraaetus spilogaster}. Zimbabwe, Africa.

John Downer / African hawk eagle portrait {Hieraaetus spilogaster} Zimbabw

Neil Lucas / Crowned hawk eagle, Zimbabwe. Captive bird

Neil Lucas / Crowned hawk eagle (Stephanoaetus coronatus) Zimbabwe. Captive

Ann & Steve Toon / Martial eagle (Polemaetus bellicosus) juvenile in flight, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Tony Heald / Black-chested buzzard-eagle (Geranoaetus melanoleucus) in flight. Bird of Prey Centre, UK. Captive.

Tony Heald / Black-chested buzzard-eagle (Geranoaetus melanoleucus), portrait. Bird of Prey Centre, UK. Captive.

Lucas Bustamante / Crested hawk-eagle (Nisaetus cirrhatus) Yala National Park, Southern Province, Sri Lanka

SCOTLAND: The Big Picture / Buzzard( buteo buteo) mobbing White Tailed Eagle (Haliaeetus albicilla) flying against blue sky fighting, Scotland, UK, June.

Richard Du Toit / Martial eagle (Polemaetus bellicosus) perched in tree, Kruger National Park, Limpopo Province, South Africa.

Richard Du Toit / Martial Eagle (Polemaetus bellicosus) flying, Karoo National Park; Western Cape Province, South Africa.

Alex Mustard / Tessellated pavement at sunset. Eagle Hawk Neck, Tasmania, Australia. Tasman Sea

Nick Garbutt / Adult African hawk-eagle (Hieraaetus spilogaster) perched in Acacia. Tarangire National Park, Tanzania.

Eric Sohn Joo Tan/ BIA / Changeable Hawk-Eagle (Spizaetus cirrhatus), Bundala National Park, Sri Lanka

Clement Francis Martin/ BIA / Changeable Hawk-Eagle (Spizaetus cirrhatus), India

Richard Du Toit / Martial Eagle (Polemaetus bellicosus) perched in tree with Blackbacked Jackal (Canis mesomelas) prey, Kruger National Park, South Africa

Sean Viljoen / Slow motion clip of a Martial eagle (Polemaetus bellicosus) taking off, Khwai River, Moremi Game Reserve, Botswana.

Christophe Courteau / Martial eagle (Polemaetus bellicosus) feeding on White stork (Ciconia ciconia) Ndutu, near Ngorongoro Conservation Area, Tanzania

Robin Chittenden / Crested hawk-eagle (Spizaetus cirrhatus ceylanensis) perched, Sri Lanka.

Robin Chittenden / Crested hawk-eagle (Spizaetus cirrhatus ceylanensis) perched, Sri Lanka.

Will Burrard-Lucas / Martial eagle (Polemaetus bellicosus) soaring with open wings. Liuwa Plain National Park, Zambia. November

Gabriel Rojo / Black-chested Buzzard-eagle (Geranoaetus melanoleucus) juvenile portrait, La Pampa, Argentina

Lucas Bustamante / Crested hawk eagle (Nisaetus cirrhatus) perched, Yala National Park, Southern Province, Sri Lanka.

Andy Rouse / Martial Eagle (Polemaetus bellicosus) in tree at sunset. Masai Mara, Kenya, Africa. December.

Andy Rouse / Martial Eagle (Polemaetus bellicosus) in distant tree at sunset. Masai Mara, Kenya, Africa. January.

Andy Rouse / Martial Eagle (Polemaetus bellicosus) in distant tree at sunset. Masai Mara, Kenya, Africa. January.

Hermann Brehm / Black-chested buzzard-eagle (Geranoaetus melanoleucus), perched above lake, Chile. March.

Staffan Widstrand / Bonelli's eagle or Eurasian hawk-eagle, Hieraetus fasciatus or Aquila fasciata, picture taken from hide, at a feeding station for conservation purposes, utillizing live domestic pigeons caught as pest...

Staffan Widstrand / Bonelli's eagle or Eurasian hawk-eagle, Hieraetus fasciatus or Aquila fasciata, picture taken from hide, at a feeding station for conservation purposes, utillizing live domestic pigeons caught as pest...

Staffan Widstrand / Bonelli's eagle or Eurasian hawk-eagle, Hieraetus fasciatus or Aquila fasciata, picture taken from hide, at a feeding station for conservation purposes, utillizing live domestic pigeons caught as pest...

Staffan Widstrand / Bonelli's eagle or Eurasian hawk-eagle, Hieraetus fasciatus or Aquila fasciata, picture taken from hide, at a feeding station for conservation purposes, utillizing live domestic pigeons caught as pest...

Neil Aldridge / Martial eagle (Polemaetus bellicosus) preening itself after rainstorm, Kruger National Park, South Africa. Vulnerable.

Neil Aldridge / Martial eagle (Polemaetus bellicosus) preening itself after rainstorm, Kruger National Park, South Africa. Vulnerable.

Neil Aldridge / Martial eagle (Polemaetus bellicosus) preening itself after rainstorm, Kruger National Park, South Africa. Vulnerable.

Roland Seitre / Whistling hawk (Milan siffleur) hunting male Budgerigar (Melopsittacus undulatus) with wet wing feathers preventing it from escaping. Wannoo, Billabong Roadhouse, Western Australia.

Gabriel Rojo / Black-chested buzzard-eagle (Geranoaetus melanoleucus) feeding on a fence post, La Pampa, Argentina

Juergen Freund / Whistling kite (Haliastur sphenurus) in flight, Yellow Water Wetlands, Northern Territory, Australia.

Ole Jorgen Liodden / Black-chested buzzard-eagle (Geranoaetus melanoleucus) immature, perched on snag, Tierra del Fuego, Argentina

Hanne & Jens Eriksen / Crested hawk eagle (Nisaetus cirrhatus) perched in tree, India, January.

Luiz Claudio Marigo / Juvenile Black-and-white Hawk Eagle (Spizaetus melanoleucus) Cerrado, Mato Grosso, Western Brazil.

Philippe Clement / Black-chested buzzard-eagle (Geranoaetus melanoleucus) portrait, captive. Occurs in South America.

Bernard Castelein / Changeable hawk eagle (Spizaetus cirrhatus), Kaziranga National Park, Assam, India.

Bernard Castelein / Changeable hawk eagle (Spizaetus cirrhatus), Kaziranga National Park, Assam, India.

Denis-Huot / Martial eagle (Polemaetus bellicosus) Masai Mara Game Reserve, Kenya

Will Burrard-Lucas / Martial Eagle (Polemaetus bellicosus) perched on branch, South Luangwa National Park, Zambia. March.

Lou Coetzer / African hawk eagle (Hieraaetus / Aquila spilogaster) running, Chobe River, Botswana, November.

Lou Coetzer / Fork tailed drongo (Dicrurus adsimilis) mobbing Martial eagle (Polemaetus bellicosus) taking off, Chobe River, Botswana.

Mike Wilkes / Martial eagle (Polemaetus bellicosus) in flight, Serengeti, Tanzania.

Mike Wilkes / Martial eagle (Polemaetus belliscosus) standing on termite mound, Ngorongoro crater, Tanzania.

ZSSD / Ornate Hawk-Eagle (Spizaetus ornatus) profile

Denis-Huot / Martial eagle (polemaetus bellicosus) Samburu Game Reserve, Kenya

Ernie Janes / Crested hawk eagle (Nisaetus cirrhatus) immature, Sri Lanka

Ernie Janes / Crested hawk eagle (Nisaetus cirrhatus) immature, Sri Lanka

Laurent Geslin / Juvenile Crested / Changeable hawk eagle (Nisaetus cirrhatus) Kahna NP, India

Claudio Contreras / Ornate Hawk-Eagle (Spizaetus ornatus) juvenile stretching, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, November.

Claudio Contreras / Ornate Hawk-Eagle (Spizaetus ornatus) juvenile, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, November.

Loic Poidevin / Crested / Changeable hawk eagle (Spizaetus / Nisaetus cirrhatus) Kaziranga National Park, Assam, India

Alex Mustard / A diver comes face to face with a Weedy Seadragon (Phyllopteryx taeniolatus). Waterfall Bay, Eagle Hawk Neck, Tasmania, Australia, March.

Alex Mustard / A colourful Weedy Seadragon (Phyllopteryx taeniolatus) swims in front on kelp. Weedy Seadragons vary greatly in colour across their range, this individual is typical of Tasmania. Waterfall Bay, Eagle...

Kevin Schafer / Crested / Changeable Hawk Eagle (Nisaetus cirrhatus) perched on dead log. Yala National Park, Sri Lanka.

Tui De Roy / African Hawk-Eagle (Hieraaetus spilogaster), Lewa Wildlife Conservation Area, Kenya

Kevin Schafer / Changeable Hawk-Eagle (Spizaetus cirrhatus) juvenile, Yala National Park, Sri Lanka

Pete Oxford / Ornate hawk-eagle (Spizaetus ornatus) juvenile at nest in rainforest, Surama, Guyana

Daniel Heuclin / Ornate Hawk-Eagle (Spizaetus ornatus) head portrait, French Guiana, South America

Pete Oxford / Ornate Hawk-Eagle (Spizaetus ornatus) juvenile in nest, Surama, Guyana

Pete Oxford / Ornate Hawk-Eagle (Spizaetus ornatus), Surama, Guyana

Pete Oxford / Ornate Hawk-Eagle (Spizaetus ornatus) and juvenile in nest, Surama, Guyana

Patricio Robles Gil / Painting of local birds on walls of Tekit Hacienda, Yucatan, Mexico - Hawk eagle, Reddish egret, Snowy egret, Little blue egret, Kingfisher, Kiskadee

Chien Lee / Wallace's Hawk-Eagle (Spizaetus nanus), Lambir Hills National Park, Borneo, Malaysia

Neil Lucas / Crowned hawk eagle (Stephanoaetus coronatus) perched above waterfall, Zimbabwe, captive

John Downer / Crowned hawk eagle {Stephanoaetus coronatus} flying over Inyangombe falls, Nyanga, Zimbabwe, captive

John Downer / Crowned hawk eagle {Stephanoaetus coronatus} with vervet monkey kill, Nyanga, Zimbabwe, Captive

John Downer / Crowned hawk eagle {Stephanoaetus coronatus} flying over Inyangombe falls, Nyanga, Zimbabwe, captive

Bernard Castelein / Crowned hawk eagle (Stephanoaetus coronatus) perched, Samburu, Kenya

Vincent Grafhorst / African Hawk-Eagle (Hieraaetus spilogaster) perching on a snag, Khama Rhino Sanctuary, Serowe, Botswana

Pete Oxford / Crested / Changeable Hawk-Eagle (Nisaetus cirrhatus) Gir Forest National Park. Gujarat, India.

Pete Oxford / Crested / Changeable Hawk-Eagle (Nisaetus cirrhatus) Gir Forest National Park. Gujarat, India.

Roger Powell / American Bald Eagle (Haliaeetus leucocephalus) landing on falconers glove. Hawk & Owl Conservancy, Hampshire, UK

Neil Lucas / Camerman Mike Richards attempting to film Blyth's Hawk eagle (Spizaetus alboniger) Jurong Bird Park, Singapore, for BBC film special Eagle, 1996

John Downer / Portrait of African hawk eagle (Hieraaetus spilogaster) with open beak, Zimbabwe

Richard Du Toit / African hawk eagle (Hieraaetus spilogaster) juvenile in flight, Moremi WR, Botswana

Nick Garbutt / Changeable / Crested hawk eagle {Nisaetus cirrhatus} plucking feathers from its dead prey (possibly a White-eyed Buzzard). Bandhavgarh National Park, Madhya Pradesh, India.

Nick Garbutt / Blythe's hawk eagle {Nisaetus alboniger} from Malaysia

DAVID TIPLING / Crested / Changeable hawk eagle at water {Nisaetus cirrhatus} North India

Neil Lucas / Crowned hawk eagle (Stephanoaetus coronatus) with vervet monkey kill, Zimbabwe

E.A. KUTTAPAN / Crested hawk eagle {Nisaetus cirrhatus} Bandhavgarh NP, India.

Pat De La Harpe / African hawk eagle {Hieraeetus spilogaster} perched over Itala GR, South Africa