Fig. 5. Frequency distribution (%) of food-unloading events (A,B) and dance circuits (C,D) throughout the hive time. Data from the decreasing series. The hive time was divided into twenty periods of equal duration. Results are shown for each of the two different reward rates offered at the GF (open bars: 90 µl min^-1, grey bars: 3 µl min^-1). See Results for details.