See the presentation Upper Thames Farmers’ Conservation Group: Kirsty Brannan, RSPB (PDF) given at the Slimbridge Conference in February 2017.
This map shows the Upper Thames Valley Curlew project area:
Studies of breeding Curlew in the Upper Thames Valley are a part of the broader RSPB Futurescapes work described in the attached leaflet (PDF), and relate to other breeding waders like Lapwing, Snipe and Redshank.