David Woodfall / Corncrake (Crex crex) walking at dawn on Machair, North Uist, Scotland, UK, June.

Jabruson / African Crake (Crecopsis egregia) portrait in long grass ,Mboko savannah-forest mozaic, Odzala-Kokoua National Park, Democratic Republic of Congo.

Peter Cairns / 2020VISION / Corncrake (Crex crex) amongst grass, Balranald RSPB reserve, North Uist, Western Isles / Outer Hebrides, Scotland, UK, May

Wild Wonders of Europe / Lesniewski / Corncrake (Crex crex) calling in grassland. Bieszczady, Carpathian Mountains, Poland.

Wild Wonders of Europe / Hermansen / Corncrake (Crex crex) calling, Tory Island, County Donegal, Republic of Ireland, June 2009

Wild Wonders of Europe / Hermansen / Corncrake (Crex crex) portrait, Tory Island, County Donegal, Republic of Ireland, June 2009

Andy Sands / Corncrake (Crex crex) calling from rock, North Uist, Outer Hebrides, Scotland, UK.

Kerstin Hinze / Corncrake (Crex crex) calling, Bavarian Forest National Park, Germany, June.

Laurie Campbell / Corncrake (Crex crex) hidden in meadow, Balranald RSPB Nature Reserve, North Uist, Scotland, June

Dave Bevan / Pair of Corncrakes (Crex crex) interacting, one pecking the other, Norfolk, England, UK. July.

Dave Bevan / Corncrake (Crex crex) preening, Norfolk, England, UK, June.

Dave Bevan / Corncrake (Crex crex) preening, Norfolk, England, UK, May.

Bence Mate / Corncrake (Crex Crex) calling, with breath vapor in early morning, Kiskunsagi National Park, Hungary

Oliver Richter/ BIA / Corncrake (Crex crex) male, Saxony, Germany

Melvin Grey / Corncrake (Crex crex) adult male and female, North Uist, Outer Hebrides, Scotland, UK.

Melvin Grey / Corncrake (Crex crex) adult male and female, North Uist, Outer Hebrides, Scotland, UK, May.

David Tipling / Corncrake (Crex crex) in Iris bed on Balranald RSPB Reserve, North Uist, Outer Hebrides, Scotland, May.

Markus Varesvuo / Corncrake (Crex crex) Estonia, May

Markus Varesvuo / Corncrake (Crex crex) calling. Helsinki, Finland. May

Markus Varesvuo / Corncrake (Crex crex) portrait. Helsinki, Finland. May

Markus Varesvuo / Corncrake (Crex crex) portrait. Helsinki, Finland May

Jabruson / African Crake (Crecopsis egregia) hiding in long grass Mboko savannah-forest mozaic, Odzala-Kokoua National Park, Republic of Congo

Jussi Murtosaari / Corncrake (Crex crex) calling male, South Karelia, southern Finland, June.

Jussi Murtosaari / Corncrake (Crex crex) male, eastern Finland, June.

Jussi Murtosaari / Corncrake (Crex crex) male, eastern Finland, June.

Fergus Gill / 2020VISION / Male Corncrake (Crex crex) vocalising, South Uist, Outer Hebrides, Scotland, UK, June.

Fergus Gill / 2020VISION / Male Corncrake (Crex crex) South Uist, Outer Hebrides, Scotland, UK, June. Did you know? Corncrakes make a rasping call which sounds like a nail scraped along a comb.

Fergus Gill / 2020VISION / Male Corncrake (Crex crex) South Uist, Outer Hebrides, Scotland, UK, June.

Bert Willaert / Hunter holding up a haul of illegaly shot birds, including Black winged stilt (Himantopus himantopus), Corncrake (Crex crex), Quail (Coturnix coturnix) and Turtle dove (Streptopelia turtur), Chorochi...

Markus Varesvuo / Corncrake (Crex crex) calling, Helsinki, Finland, May

Peter Cairns / 2020VISION / Corncrake (Crex crex) amongst grassland, Balranald RSPB reserve, North Uist, Western Isles / Outer Hebrides, Scotland, UK, May

Andrew Parkinson / Corncrake (Crex crex) hidding in Yellow Flag Iris (Iris gernanica) North Uist, Outer Hebrides, Scotland, UK. May. (non-ex)

David Kjaer / Corncrake (Crex crex) calling, North Uist, Outer Hebrides, Scotland, May

David Kjaer / Corncrake (Crex crex) on rock calling, North Uist, Outer Hebrides, Scotland, May

David Kjaer / Corncrake (Crex crex) on rock, North Uist, Outer Hebrides, Scotland, May

Chris Gomersall / Male Corncrake (Crex crex) in hay meadow, Balranald RSPB Reserve, North Uist, Outer Hebrides, Western Isles, Scotland

Roy Mangersnes / Corncrake (Crex crex) walking in low grass, Rogaland, Norway. May

Roy Mangersnes / Corncrake (Crex crex) with feathers fluffed up, Rogaland, Norway. May

Paul Hobson / Corncrake (Crex crex) calling, North Uist, Scotland, UK

Paul Hobson / Corncrake (Crex crex), North Uist, Scotland, UK

Paul Hobson / Corncrake (Crex crex) North Uist, Scotland, UK

David Kjaer / Corncrake (Crex crex) North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation calling, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation on Balranold RSPB Reserve, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation, North Uist, Outer Hebrides, Scotland

David Kjaer / Corncrake (Crex crex) in vegetation, North Uist, Outer Hebrides, Scotland

Steve Knell / Corncrake {Crex crex} male calling, Outer Hebrides, Scotland, May 2007

Steve Knell / Corncrake {Crex crex} calling, Outer Hebrides, Scotland, May 2007

Steve Knell / Corncrake {Crex crex} calling, Outer Hebrides, Scotland, May 2007

Steve Knell / Corncrake (Crex crex) calling in grassland, Czech Republic

David Kjaer / Corncrake {Crex crex} North Uist, Outer Hebrides, Scotland, UK

David Kjaer / Corncrake {Crex crex} North Uist, Outer Hebrides, Scotland, UK

Niall Benvie / Corncrake conservation - corridor beside agricultural land. Coll, Argyll, Scotland

Andy Sands / Corncrake {Crex crex} calling in meadow, North Uist, Outer Hebrides, Scotland, UK.

Andy Sands / Corncrake {Crex crex} calling, with head visible in Buttercup meadow, North Uist, Outer Hebrides, Scotland, UK.

Jose B. Ruiz / Corncrake {Crex crex} juvenile feeding, Spain

Niall Benvie / Corncrake calling {Crex crex} Scotland

Chris Gomersall / Adult Corncrake in hay meadow {Crex crex} Isle of Coll, Scotland, UK

David Kjaer / Corncrake (Crex crex) calling among daisies North Uist, Scotland

Martin H Smith / Corncrake calling, machair, South Uist, Scotland (Crex crex) Endangered species

Martin H Smith / Corncrake calling, machair, South Uist, Scotland (Crex crex) Endangered species

DAVID TIPLING / Corncrake {Crex crex} .

Thomas Hinsche/ BIA / Corncrake (Crex crex), Saxony-Anhalt, Germany

Avi Meir/ BIA / Corncrake (Crex crex) at waterhole, Eilat, Israel

Thomas Hinsche/ BIA / Corncrake (Crex crex) calling, Saxony-Anhalt, Germany

Benjamin Olson / Sharp-tailed Grouse (Tympanuchus phasianellus), Crex Meadows Wildlife Area, Wisconsin

Benjamin Olson / Sharp-tailed Grouse (Tympanuchus phasianellus), Crex Meadows Wildlife Area, Wisconsin

Benjamin Olson / Sharp-tailed Grouse (Tympanuchus phasianellus), Crex Meadows Wildlife Area, Wisconsin

Jussi Murtosaari / Corncrake (Crex crex) male, standing among vegetation, calling, Finland. July.

David Woodfall / Corncrake (Crex crex) calling at dawn on machair, North Uist, Outer Hebrides, Scotland, UK, June.