Feeney, WilliamMedina, IlianaSomveille, M.Heinsohn, RobertHall, MichelleMulder, RaoulStein, JohnKilner, RebeccaLangmore, Naomi2015-12-100036-8075http://hdl.handle.net/1885/65743The global distribution of cooperatively breeding birds is highly uneven, with hotspots in Australasia and sub-Saharan Africa. The ecological drivers of this distribution remain enigmatic yet could yield insights into the evolution and persistence of coopR.A.M. and M.L.H. were supported by Australian Research Council (ARC) Discovery Grant DP110103120. N.E.L. was supported by ARC Discovery Grant DP110101966. Data are archived on Figshare. N.E.L. and W.E.F. conceived the study; macroecological analyses were done by M.S. and J.A.S.; comparative analyses were done by I.M.; field data were collected by N.E.L., R.M.K., R.H., M.L.H., and R.A.M.; model and playback experiments were done by W.E.F.; and N.E.L. and R.M.K. wrote the paper.201310.1126/science.12400392015-12-10