I realise that this image may be inappropriate ie at a breeding site, but, whilst searching for Larks, I came across a few nesting pair of Collared Pratincole near San Javier Airport, Murcia, Spain. I could barely believe my eyes when I realised that the field was being ploughed. My useless, shouted English / Spanish was received by the tractor driver with a waving of arms ....... there was nothing I could do. I took a few images before the eggs were destroyed! So so sad :-(.