Male baboon wahoos


           Power's 'alarm' wahoo (to a lion)                                       Power's 'contest' wahoo


     Alarm wahoo are relatively noisy, with a shorter 'hoo' than contest wahoos


    Differences in wahoos at the start and                              High- and low-ranking males' wahoos  
    end of a calling bout                                                            compared                      

            Male Enzo                                                                               High-ranking           Low-ranking
                                                                                                             Power                      Bob

       Changes in wahoos with age: Wanda in 1992 and 2002


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