The number of foragers trained at the different stages of colony growth/development.

Data shown indicate whether the queen was successfully trained in each colony (Yes/No), the number of nectar foragers trained per colony at different stages of colony development (time periods are 0–20, 21–40, 41–60 and 61+ days after the emergence of the first worker: colony age), and the total number of workers (and percentage of the colony nectar foraging force) trained.