Fig. 5

Three modes of sex ratio precision and the resultant sex ratio-clutch size relationship. a The probability that successive eggs will be male and b the sex ratio at a certain completed/terminated clutch size for the three sex ratio strategies: exact (solid line), slope (dashed line) and binomial (dotted line) for a clutch of 56 that all result in a mean completed sex ratio of 3/14 after 56 eggs were lain. For the slope strategy the probability that egg number x will be male is given by ce^ax/(ce^ax + 1-c), with c = 0.9 and a = -0.1849463