When granting planning permission for wind turbines or wind farms, planning authorities may in some cases include post-construction monitoring as a condition of that planning permission. Carcass searching around the base of some or all of the turbines in the target wind-farm may be part of such post-construction monitoring.
Such data, as a condition of planning consent, would generally be supplied to the planning authorities; my Department does not have a role in its collection.
However, the draft Hen Harrier Threat Response Plan, currently being finalised in my Department, sets out the need for a centralised repository for reports of this data to help inform the conservation management of Hen Harrier and other terrestrial bird species that may interact with turbines.