Orientation flights of drones from hive 1 (A), hive 3 (B) or hive 2 (C &D). Sections of flight classified as straight are depicted in black; sections of flight classified as convoluted are shown by red lines. Gaps of greater than 30 s between consecutive data points are indicated by dashed lines. The start of the track is marked by a green triangle and the end by a red rectangle. Hives are marked by blue circles and numbered. The center of mass of each cluster of data points that we identified as a probable congregation area is marked by a gray circle and labeled A-D. From Woodgate et al., 2021 https://doi.org/10.1016/j.isci.2021.102499