Fig. 6

Monthly collision estimates produced from Band Option 3 CRM for 12 hypothetical wind farms with differing turbine parameters, using modelled GPS (red) and altimeter (blue) flight heights for sampling rate resolutions of five minutes and 10 s. Hypothetical wind farms increase in hub height and rotor radius, and decrease in wind farm density, from 1–12 (specific wind farm parameters outlined in Additional file 1)