Age-specific differences between <i>S. teguina</i> and <i>S. xerampelinus</i> in whole call and individual note measures of frequency and timing.

adominant frequency; bminimum frequency; cmaximum frequency; dnote duration; einternote interval; fnote rate (ratio internote interval:note duration); thigher value in S. teguina; xhigher value in S. xerampelinus; significance tested with ANOVA, P-values in bold are significant after Bonferroni correction (α = 0.002). Age-specific differences between S. teguina and S. xerampelinus in whole call and individual note measures of frequency and timing.