The BBC news website reports that Ralph Stelzer and Lars Chittka have found that stripes on a bumblebees may not be what scares off predators, instead it could be the way they fly and their buzzing sound. Ralph Stelzer said: “The results mean that the explanation for the bumblebees' colouration patterns is not as simple as previously thought.” The results of the study have been published in the Journal of Zoology.