Fitness costs of female choosiness are low in a socially monogamous songbird
Fig 6
Extra-pair mating as a function of pairing status.
Proportion of eggs sired outside the monogamous pair bond EPP (gray bars) versus WPP (white bars) for 3 groups of females with a single social pair bond. These are (1) assortatively paired females (n = 35) from the relaxed-competition treatment (blue); (2) assortatively paired females (n = 28, one of which did not lay any eggs) from the high-competition treatment (red); and (3) disassortatively paired females (n = 21) from the high-competition treatment. For each category of eggs, we indicate the proportion that is sired assortatively (“assort”) for song dialect and in parentheses the random expectations (“exp”) for this proportion of assortative mating based on the number of available extra-pair males of each song dialect. For more details, see also S16 Table. The data underlying this figure can be found in https://osf.io/6e8np/. EPP, extra-pair paternity; WPP, within-pair paternity.