Figure 6: The learning curve (time/sec) (±SE) taken to access and forage on syrup for 9 workers of Bombus impatiens which were allowed to contact with their nestmates B1 (i.e., they were watching the experienced bees from colony A). The B2 bees were kept inside the hive and then, after release to forage, had apparently learned to manipulate the artificial flowers through communication with their nestmates. H0 showing that the durations for successful foraging are independent of experience of having communicated with their nestmates is rejected ( ; ).