Bumblebees socially learn behaviour too complex to innovate alone - Nature
Bumblebees can learn how to open a two-step puzzle box by observing another trained bee, indicating that these insects can use social learning to acquire a behaviour too complex to otherwise be learnt through individual trial and error.
instead of naming the two groups C1 and C2 for colony one and two, they should have named them A-team and Bee team because the bees were teaming up.