We're excited about our new publication, "Colour learning when foraging for nectar and pollen: bees learn two colours at once" out today in Biology Letters. It was a fun experience to prepare a short-format manuscript, and Felicity's experiment uncovered some exciting findings about basic aspects of bee foraging.
When most people think about bee learning, they think of sugary nectar rewards. However, many bees collect both nectar and pollen (their source of protein) on a foraging trip. Felicity was interested in the cognitive aspects of this "multitasking". At least here when the rewards are on different flowers, bees can indeed learn to associate color + reward type. Doing so may come at a cost, as we found some evidence that bees focusing on a single reward performed better (more on that in forthcoming publications).
From the plant POV, it's interesting that bees seem to form expectations about what kind of reward a plant will offer based on its color. Could this have consequences for co-flowering plant species?