Learned olfactory cues affect pollen-foraging preferences in honeybees, Apis mellifera

► Honeybees learned odour cues associated with pollen reward. ► Honeybees transferred memories of learned odour cues associated with pollen between behavioural contexts. ► Learned odour triggered reactivation of bees to a past pollen-foraging site. ► Bees showed proboscis extension reflex (PER) conditioning with different types of hand-collected pollen as reward. ► Odour-pollen association did not rely on amino acids but on sugars and fatty acids.