I was not aware that these incredibly rare birds had been re introduced to this part of Spain. There is one small population of about 100 in Morocco which is easily visible from here. In fact I can see the lights of Tangiers across the water through my window as I am writing this. There is a web site where you can read a lot more about this bird
They were just in a scruffy bit of farmland, not in any particular special habitat. It was odd that where I parked, next to us was another car and the occupants were out for some Sunday morning bird catching, which is illegal but is very popular in this part of Spain. So we had conservation and poaching right next to one another.