Females’ preferences for male USVs over one min intervals.

Results of females socially housed and reared (A) with father (n = 13) and (B) without father (n = 13); and individually housed and reared (C) with father (n = 13) and (D) without father (n = 9). Preferences measure using USV preference ratio (UPR) and mean linear regression lines show significant differences. Data points displayed are the UPR of each female at each min block.