Positive emotional contagion in a New Zealand parrot Raoul Schwing, Ximena J. Nelson, Amelia Wein, Stuart Parsons  Current Biology  Volume 27, Issue 6, Pages R213-R214 (March 2017) DOI: 10.1016/j.cub.2017.02.020 Copyright © 2017 Elsevier Ltd Terms and Conditions

Figure 1 Mean (+95% CI) kea play response before, during and post-stimulus playback periods for five auditory stimuli. (A) Number of play bouts per bird. (B) Play bout length produced per bird (s). Warble play calls were the only stimulus to significantly increase both the instances of play and the length of play bouts during playback (indicated by an asterisk), when compared to the pre- and post-experimental periods. No other comparisons were significant. Current Biology 2017 27, R213-R214DOI: (10.1016/j.cub.2017.02.020) Copyright © 2017 Elsevier Ltd Terms and Conditions