Boxplots of the proportion of call types (y-axis) for females (top, nfemales = 12) and males (bottom, nmales = 10) over the detailed breeding stages (x-axis, UP: Unpaired, NN: No nest, Inspec: Nest inspection, Terr: Nest defence, Build: Nest building, Lay: Egg-laying, Incub: Incubation). Sample sizes during different breeding stages were 10, 14, 8, 12, 18, 10, and 7 data points coming from 7, 7, 6, 8, 12, 7, and 5 different females, and 10, 13, 6, 12, 15, 6, and 5 data points coming from 7, 6, 4, 8, 10, 5, and 3 different males. Bayesian estimates and CrI are plotted as coloured points and vertical bars (red: females, blue: males). For further explanations and abbreviations, see Figure 4. Note the different scale and missing Bayesian statistics for ‘whines’ (right), as these consisted a comparably small part of the repertoire and included many zero values, especially at the earlier breeding stages. A table showing all Bayesian estimates and credible intervals can be found in Appendix 2. Source data are available at http://datadryad.org/review?doi=doi:10.5061/dryad.vt69s.