Table 3.

Model selection table for models with the highest support (Δi≦2) investigating calling occurrences, the number of calls per interaction bout, the three PCs, call duration, and the responses to playbacks of defensive calls manipulated in fo and call duration

Response	Model No.	Fixed factors	AICc	Δi	Relative likelihood	Akaike weight
Calling propensity	1	Level of aggression	960.4	0.0	1.0	0.50
	2	Level of aggression + rank difference	961.2	0.9	0.65	0.33
Number of calls/bout	1	Level of aggression	528.0	0.0	1.0	0.49
	2	Level of aggression + rank difference	530.1	2.0	0.36	0.18
fo component	1	Level of aggression * rank difference	823.1	0.0	1.0	0.78
Amplitude component	1	Level of aggression	635.6	0.0	1.0	0.58
Jitter and tonality component	1	Rank difference	987.5	0.0	1.0	0.72
Call duration	1	Level of aggression * rank difference	−1310.4	0.0	1.0	0.87
			QAICc	Δi	Relative likelihood	QAkaike weight
Pitch manipulation	1	Manipulation type	37.1	0.0	1.0	0.61
Duration manipulation	1	Null	60.2	0.0	1.0	0.72

Corrected Akaike Information Criterion (AICc) values, the difference between the lowest AICc value and all other AICc values (Δi), the relative likelihood, and resulting Akaike weights are presented (for the models on the playback experiment, quasi (Q) values are shown). “*” indicate main factors and their two-way interaction