TY - JOUR A1 - Brouwer, L. A1 - Van de Pol, M. A1 - Cockburn, A. T1 - The role of social environment on parental care: Offspring benefit more from the presence of female than male helpers Y1 - 2014 DO - 10.1111/1365-2656.12143 JF - Journal of Animal Ecology VL - 83 IS - 2 ER -