Do Nestling Vocalizations Depend on the Situation?

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This is a stacked bar chart with situations with vocalizations on the x-axis (Brooding, Arrive/Depart, and Feeding Nestlings). The percentage of clips on the y-axis shows the percentage of clips with a particular type of vocalization out of the clips with each situation that had some vocalization. The four possible vocalization types are: peep only, peep and whistle, whistle only, and unsure. So, it looks like nestlings peeped most during brooding and feeding and least during arrive/depart. Also, There are more whistles during arrive/depart and feeding nestlings compared to brooding.

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Reading the Graph: Do nestlings use peeps and whistles in different situations? Find out and see if you notice any other patterns by simplifying the graph with the interactive feature. Look for the checked boxes under “Choose What to Display,” and toggle on and off the different choices to see if you notice any patterns.

Notes: The percentage of clips for each colored bar refers to the clips with that type of vocalization out of the clips recorded with nestling vocalizations during that situation. For example, out of all the clips with vocalizations during brooding, 60% included the nestlings peeping only. (N=the number of clips, which varies from category to category since nestlings vocalize in response to some events more than others.) “Unsure” refers to the clips with vocalizations but no agreement on the vocalization type.

For simplicity, we’ve combined some categories of data collected by participants. “Feeding Nestlings” includes instances when adults were feeding nestlings or eating prey because the adults sometimes ate while feeding nestlings. We have not shown data for “Prey Transfer” because no such events were recorded. “Moving Prey” is not included because nestlings never vocalized while adults were moving prey.

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