Figure 5 – figure supplement 1: Increasing specificity of within-pair vocal interactions

For each breeding stage, the overall mean number of calls per bird (within the five analysed call types, and extrapolated to four hours of recordings) with standard deviation, standard error and confidence intervals. We also show the specificity of pair calling interactions by providing within-pair (percentage.pair) and extra-pair (percentage.nonpartner) percentages of occurred positive (from respective possible) calling interactions.