A review to inform the assessment of the risk of collision and displacement in petrels and shearwaters from offshore wind developments in Scotland

The report presents a review of the published literature to collate and synthesise the existing evidence base for the assessment of the impacts of offshore wind farms and associated activities on three focal species: Manx Shearwater, European Storm-petrel and Leach's Storm-petrel. It identifies critical gaps in existing knowledge, outlines the challenges to filling data gaps, and makes recommendations for possible approaches for improving the existing evidence base. The report includes particular reference to Scotland's Sectoral Marine Plan Options, the specific risks posed to nocturnally active petrels and shearwaters by artificial lighting, and how light attraction may influence assessment of other risks (e.g. collision). Potential mitigation methods are outlined.