Heat map of the landscape used by drones – bright spots are DCA’s
C and E are all flights in 2016 and 2017 respectively. D and F are flights other than orientation flights (which were centred on the hives located at positions 1, 2 and 3). Areas A-D are likely drone congregation areas. From Woodgate et al., 2021 https://doi.org/10.1016/j.isci.2021.102499