Dear Colleagues, We are very pleased to share with you our publication in the current issue of Zoo Biology: Lima A, Lemasson A, Boye M, Hausberger M. Vocal activities reflect the temporal distribution of bottlenose dolphin social and non-social activity in a zoological park. Zoo Biology. 2017;1–9. https://doi.org/10.1002/zoo.21387 This is the first description of the time-budget of captive dolphins using vocal and non-vocal data. The work discuss differences in the temporal distribution of social activities with wild animals and highlights the impact of Human-controlled feeding schedules in captive settings. *Abstract* Under natural conditions bottlenose dolphins (*Tursiops truncatus*) spend their time mostly feeding and then travelling, socializing, or resting. These activities are not randomly distributed, with feeding being higher in early morning and late afternoon. Social activities and vocal behavior seem to be very important in dolphin daily activity. This study aimed to describe the activity time-budget and its relation to vocal behavior for dolphins in a zoological park. We recorded behaviors and vocalizations of six dolphins over 2 months. All subjects performed more non-agonistic social interactions and play in the morning than in the afternoon. The different categories of vocalizations were distributed non-randomly throughout the day, with more chirps in the afternoon, when the animals were “less social.” The most striking result was the strong correlation between activities and the categories of vocalizations produced. The results confirm the association between burst pulses and whistles with social activities, but also reveal that both are also associated with solitary play. More chirps were produced when dolphins were engaged in socio-sexual behaviors, emphasizing the need for further questioning about the function of this vocal category. This study reveals that: (i) in a group kept in zoological management, social activities are mostly present in the morning; and (ii) the acoustic signals produced by dolphins may give a reliable representation of their current activities. While more studies on the context of signal production are needed, our findings provide a useful tool for understanding free ranging dolphin behavior when they are not visible. The paper can be found here: http://onlinelibrary.wiley.com/doi/10.1002/zoo.21387/full Or send any requests for copies directly to alice.lima@univ-rennes1.fr Best wishes, Alice Lima -- Alice de Moura Lima Bióloga - Mestre em Zoologia - PPGZOO/UESC Doctorante / PhD Student Université de Rennes 1 UMR CNRS 6552 "Ethologie Animale et Humaine" Station Biologique de Paimpont 35380 Paimpont