Fig. 7. A returning bee that does not land during the videotaping period. (A) The three-dimensional flight path of a returning bee 33 min after sunset, having left the nest 14 min earlier (19 min before sunset). The light level during this return was 1.1x10^–4 cd m^–2. (B) Running distance from the nest while the bee is visible to both cameras. The horizontal gray line shows the 15 cm threshold, for comparison with Fig. 5D,E. Each grid square in A is 10 cm per side.