While in this study we have not analysed how population parameters may vary spatially it is apparent from the existing literature that coastal territories are more productive and more frequently used than inland sites  \citep{Curtis2004,Garcia_Heras_2016,Garcia_Heras_2017}. Therefore, it could be argued that wind farms sited at coastal regions would have greater impacts on Black Harrier populations than wind farms placed inland. However, one of the most striking results of our analysis is the exquisite sensitivity of our Black Harrier populations to adult survival rates. This is consistent with previous studies that showed population of long-lived birds being largely influenced by adult survival (\citealt{Mart_nez_Abra_n_2011,Carrete_2009,Saether2000},  see also \citealt{Schorcht_2009} for bats).  Thus, given the sensitivity of the populations to adult survival, and less so to reproductive indices, mortality risk should be considered similarly detrimental to the global harrier population, regardless of the geographical location.