Table 3.

Differences in call prevalence based on trial type, sex combination, and age combination as determined by Pearson's Chi-Square statistics.

	UFM	CS	SFM~	LFM	QCF	FMB
Trial type	—	N > Mi > S	S > Mi S > N	—	Mi > S N > S	S > Mi > N
Sex	MM > FM MM > FF	—	—	—	MM > FM MM > FF	MM > FM > FF
Age∧	AJ > AA	—	—	—	—	N/A

Bold lettering indicates comparisons that are significant after a sequential Bonferroni correction. > indicates that the given call type was more common in the context to the left of the symbol.—indicates no significant difference for that comparison. N, naïve; Mi, mixed; and S, skilled trial type; MM, male–male; and FM, female–male; and FF, female–female trials; AA, adult–adult; and AJ, adult–juvenile. See Figure 3 for distribution of calls across trial types and sex and age combinations.

^∧Data pertaining to age refers only to naïve and mixed trial types.

^~Because we found a significant interaction between sex and trial type for SFM, we tested for type effects within female–male (FM) and male–male (MM) trials separately. The data shown above for SFM refer to FM trials; there was no significant difference in trial type within MM trials only, and we had insufficient data to test within FF trials.