Example of vertically integrated bird density for different time slices through the night of 3-4 October 2016 over the Netherlands and Belgium
We thank Hans van Gasteren for valueable discussions. We thank Stephan Klaus from Deutscher Wetterdienst (DWD) for providing radar data. Weather radar data from Belgium was kindly provided by the Royal Meteorological Institute (RMI) under user licence agreement 2018-UI-AD/084 with the assistance of Maarten Reyniers. This research was financially supported by the Netherlands Ministry of Defence through the Bird Avoidance System (BAS) project, by the Ministery of Agriculture, Nature and Food Quality, the Ministery of Economic Affairs and Climate Policy, Rijkswaterstaat, and the Province of Groningen through wind farm projects, and by the 2017-2018 Belmont Forum and BiodivERsA joint call for research proposals, under the BiodivScen ERA-Net COFUND programme, and with the funding organisations Swiss National Science Foundation (SNF 31BD30_184120), Belgian Federal Science Policy Office (BelSPO BR/185/A1/GloBAM-BE), Netherlands Organisation for Scientific Research (NWO E10008), Academy of Finland (aka 326315) and National Science Foundation (NSF 1927743).