Drifting behaviour as an alternative reproductive strategy for social insect workers by Pierre Blacher, Boris Yagound, Emmanuel Lecoutey, Paul Devienne, Stéphane Chameron, and Nicolas Châline Proceedings B Volume 280(1771): November 22, 2013 ©2013 by The Royal Society

Comparison of the drifting behaviour performed by experimental bees. Pierre Blacher et al. Proc. R. Soc. B 2013;280: ©2013 by The Royal Society

Proportions of experimental bees in social and competition colonies that exited their nest. Pierre Blacher et al. Proc. R. Soc. B 2013;280: ©2013 by The Royal Society

Ovarian development of control (white bars) and experimental bees (grey bars, social; black bars, competition) that stayed in their natal colonies. Pierre Blacher et al. Proc. R. Soc. B 2013;280: ©2013 by The Royal Society