Appendix A2 from Bird and bat species' global vulnerability to collision mortality at wind farms revealed through a trait-based assessment B. ThaxterChris M. BuchananGraeme CarrJamie H. M. ButchartStuart NewboldTim GreenRhys E. A. TobiasJoseph B. FodenWendy O'BrienSue W. Pearce-HigginsJames 2017 Supplementary methods detailing classification of study quality for studies included in the meta analysis.