Causes of egg hatching failure by the type of social mating system in dunnocks.

The number of eggs and percentages are shown for each category of hatching failure for polyandrous and monogamous nests. Effect sizes (β) and associated 95% credible intervals (CI) are shown for the difference between types of social mating system in relation to the kind of hatching failure. We present Cohen's d effect sizes (with associated standard error (SE) and 95% confidence intervals (95% CI)) for the difference between polyandrous and monogamous nests calculated from the z-value of the models and sample sizes from raw data.