Fig. 5From: Calls during agonistic interactions vary with arousal and raise audience attention in ravensProportion of responding birds with respect to natural playback stimuli (unmanipulated) and stimuli manipulated in call duration (white boxes) and fo (grey boxes). Bold lines indicate the median, and circles the outliers. Whiskers represent 1.5XIQR and asterisk indicate p < 0.05 (*)Back to article page