Mate availability affects the conflict between producing one ormultiple annual clutches

M.C.B. was supported by a Ph.D. grant (JAEPre_09_01372) from the Consejo superior de Investigaciones Cientificas (CSIC) and co-financed by the European Social Fund, and a contract funded by the Spanish Ministry of Education and Science (CGL2012-32459 to P.S.F.). L.S-J. was funded by the Spanish Ministry of Education and Science and the European Social Found (I3P-060501). C.R.D. was supported by the Spanish Ministry of Education (FPU program, grant number AP2009-0350). Project funds were provided by the Spanish Ministry of Education and Science (CGL2008-01522 and CGL2012-32459 to P.S.F) and the Swiss National Science Foundation (PPOOP3_128375, PP00P3_152929/1 to P.S.F).