Changes in sportive lemur behaviours (resting, vigilance, autogrooming) in response to playbacks.

Mean (minimum-maximum) percentages of behaviours observed immediately before and after presentation of alarm calls and songs of crested coua and Madagascar magpie robins, as well as aerial, terrestrial alarm, agitation, and contact calls of blue-eyed black lemurs. χ2 test (rate 50%; P≤0.05).