Roger Powell / Stone curlew (Burhinus oedicnemus) approaching nest of two eggs, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone Curlew (Burhinus oedicnemus) pair walking through a flower meadow, Castro Verde, Portugal, April

Wild Wonders of Europe / Lesniewski / Stone curlew (Burhinus oedicnemus) Bagerova Steppe, Kerch Peninsula, Crimea, Ukraine, July 2009

Wild Wonders of Europe / Lesniewski / Stone curlew (Burhinus oedicnemus) by nest, Bagerova Steppe, Kerch Peninsula, Crimea, Ukraine, July 2009

John Cancalosi / Stone curlew (Burhinus oedicnemus) calling on nest. England, UK, Europe

John Cancalosi / Stone curlew (Burhinus oedicnemus) at nest with eggs. UK

Roger Powell / Stone curlew (Burhinus oedicnemus) looking at chick poking its head out of its back feathers, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) brooding chick at nest, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) incubating remaining egg, with chick already hatched in front, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) incubating remaining egg, with chick already hatched in front, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) incubating remaining egg, with chick already hatched in front, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) incubating remaining egg, with chick flaked out sunbathing in front, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) incubating with storm approaching in early evening sunshine, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) at nest of two eggs, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) pair changing over incubation duties at the nest, Guerreiro, Castro Verde, Alentejo, Portugal, April

Hanne & Jens Eriksen / Stone curlew / Eurasian thick knee (Burhinus oedicnemus) resting, Qatar, December

Hanne & Jens Eriksen / Stone curlew / Eurasian thick knee (Burhinus oedicnemus) near rock, Qatar, December

Hanne & Jens Eriksen / Stone curlew / Eurasian thick knee (Burhinus oedicnemus) resting, Qatar, December

Roger Powell / Stone-curlew (Burhinus oedicnemus) nest and eggs in their breeding habitat. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Stone-curlew (Burhinus oedicnemus) pair as they switch over tending the nest. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Stone-curlew (Burhinus oedicnemus) nest and eggs. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Stone-curlew (Burhinus oedicnemus) pair as they switch over tending the nest. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Stone-curlew (Burhinus oedicnemus) nest with perfectly camouflaged chicks. Castro Verde, Alentejo, Portugal, May.

Roger Powell / Stone-curlew (Burhinus oedicnemus) calling. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Stone-curlew (Burhinus oedicnemus) calling to its mate while incubating. Castro Verde, Alentejo, Portugal, April.

Fabrice Cahez / Eurasian Stone-curlew (Burhinus oedicnemus) foraging amont pebbles. River Allier, France, July.

Roger Powell / Stone Curlew (Burhinus oedicnemus) pair walking through a flower meadow, Castro Verde, Portugal, April

Wild Wonders of Europe / Lesniewski / Stone curlew (Burhinus oedicnemus) Bagerova Steppe, Kerch Peninsula, Crimea, Ukraine, July 2009

Wild Wonders of Europe / Lesniewski / Stone curlew (Burhinus oedicnemus) on nest calling, Bagerova Steppe, Kerch Peninsula, Crimea, Ukraine, July 2009

Nick Garbutt / Stone curlew / Eurasian thick-knee (Burhinus oedicnemus) portrait, Bandhavgarh NP, India

TJ Rich / Stone-curlew / Thick-knee {Burhinus oedicnemus} on nest, Bandhavgarh NP, Madhya Pradesh, India

Paul Hobson / Stone Curlew {Burhinus oedicnemus} preening, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} eggs in nest in field, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} pair at nest for change-over, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} eggs in nest in field, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} settling onto eggs in nest, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} in field, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} settling onto eggs in nest, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} in field, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} on nest, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} camouflaged in field, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} on nest, Norfolk, UK

Paul Hobson / Stone Curlew {Burhinus oedicnemus} on nest, Norfolk, UK

Paul Hobson / Stone Curlew (Burhinus oedicnemus) pair changing over at the nest, Norfolk, UK

Tony Heald / Eggs camouflaged in nest of Eurasian Thick-Knee / Stone curlew [Burhinus oedicnemus] Bandhavgarh NP, Madhya Pradesh, India, March

Tony Heald / Eurasian Thick-Knee / Stone curlew [Burhinus oedicnemus] Bandhavgarh NP, Madhya Pradesh, India, March

Nick Garbutt / Eurasian Thick-Knee / Stone Curlew {Burhinus oedicnemus} Bandhavgarh National Park, India.

George McCarthy / Stone Curlew {Burhinus oedicnemus} camouflaged on nest on beach, Lesvos, Greece

Simon Colmer / Stone curlew (Burhinus oedicnemus) Captive

Simon Colmer / Stone curlew (Burhinus oedicnemus) Captive

David Kjaer / Stone curlew at nest in field {Burhinus oedicnemus} Wiltshire, England, UK

David Kjaer / Stone Curlew {Burhunus oedicnemus} pair changing over incubating at nest with eggs, Norfolk, UK

David Kjaer / Stone Curlew at nest on ground (Burhinus oedicnemus) UK

John Cancalosi / Stone curlew {Burhinus oedicnemus} profile, UK.

John Cancalosi / Stone curlew {Burhinus oedicnemus} on nest, UK.

Jose B. Ruiz / Stone curlew incubating on nest {Burhinus oedicnemus} Spanish steppes, Alicante, Spain.

Artur Tabor / Stone curlew {Burhinus oedicnemus} at nest, Poland.

Tony Heald / Stone curlew / Eurasian thick-knee {Burhinus oedicnemus} profile, Bandhavgarh NP, India.

Artur Tabor / Stone curlew {Burhinus oedicnemus} chick, Podlasie, Poland

Duncan Usher / Eurasian Thick-knee (Burhinus oedicnemus) male on nest with eggs under stormy sky, Europe

Konrad Wothe / Eurasian Thick-knee (Burhinus oedicnemus) sitting on ground

Jose B. Ruiz / Stone Curlew at nest, eggs well camouflaged. Spain

Jose B. Ruiz / Stone Curlew at nest on ground, Spain

David Kjaer / Stone curlew {Burhinus oedicnemus} Norfolk, UK, summer

David Kjaer / Stone curlew pair at nest {Burhinus oedicnemus} Norfolk, UK, summer ground

David Kjaer / Stone curlew portrait head portrait {Burhinus oedicnemus} Norfolk, UK, summer

Jose B. Ruiz / Stone curlews defending nest from snake, Spain.

Jose B. Ruiz / Stone curlew nest, eggs & adult (Burhinus oedicnemus) Spain, Alicante, Spanish steppes.

Jose B. Ruiz / Stone curlew incubating eggs on nest Spain

Mike Read / Stone curlew settling on eggs {Burhinus oedicnemus} Norfolk, UK

Jose B. Ruiz / Stone curlew (Burhinus oedicnemus) defending nest from snake Spain Alicante, Spanish steppes.

Mike Read / Stone curlew nest with eggs {Burhinus oedicnemus} Norfolk, U

Mike Read / Stone curlew tagged bird {Burhinus oedicnemus} Norfolk, U

Mike Read / Stone curlew on nest {Burhinus oedicnemus} Norfolk, UK

Mike Read / Stone curlew on nest in crop field with tractor behind. UK {Burhinus oedicnemus} Norfolk

Mike Read / Stone curlew tagged bird at nest {Burhinus oedicnemus} Norfolk, UK