14 The amplitudes of the independent signals form a multi-dimensional time-varying 15 vector which was logged continuously for eight months. We found that combined 16 with specifically tailored weighting factors, this vector provides a signature highly 17 specific to the swarming process and its build up in time, thereby shedding new 18 light on it and allowing its prediction several days in advance. 19The output of our monitoring method could be used to provide other signatures 20 highly specific to other physiological processes in honey bees, and applied to better 21 understand health issues recently encountered by pollinators.22 23