Robin Chittenden / Great stone-curlew (Burhinus recurvirostris / Esacus recurvirostris) Sri Lanka.

Robin Chittenden / Great stone-curlew (Burhinus recurvirostris / Esacus recurvirostris) Sri Lanka.

Robin Chittenden / Great thick-knee (Burhinus recurvirostris) two standing side by side, Sri Lanka.

Pete Oxford / Great thick-knee (Esacus recurvirostris) National Chambal Gharial Wildlife Sanctuary, Madhya Pradesh, India

Pete Oxford / Great thick-knee (Esacus recurvirostris) National Chambal Gharial Wildlife Sanctuary, Madhya Pradesh, India

Ashish & Shanthi Chandola / Great thick-knee (Esacus recurvirostris), Yala National Park, Sri Lanka.

Ashish & Shanthi Chandola / Great thick-knee (Esacus recurvirostris), Yala National Park, Sri Lanka.

Axel Gomille / Great Thick-knee / Great Stone Plover (Esacus / Burhinus recurvirostris) in profile. Karnataka, India.

Hanne & Jens Eriksen / Great stone plover {Esacus recurvirostris} on beach, Shinas, Oman

Bernard Castelein / Great thick knee / stone plover {Esacus recurvirostris} in flight, Bund Baretha, Rajasthan, India

Bernard Castelein / Two Great thick knee / stone plovers {Esacus recurvirostris} in flight, Bund Baretha, Rajasthan, India