Fig. 2

Wavelet analysis of feeding and general-foraging activity rhythms. A Dominant periods identified using wavelet decomposition of each activity profile during the continued entrainment phase (Day 9–12). The x-axis shows the average wavelet power for different period lengths. The y-axis shows the period length (log2-scaled) in hours. Significant period lengths (siglvl < 0.05) are shown in red, and the peak indicates the dominant period having the most power (around 24 h for all three activity profiles, and an additional 12 h peak observed in feeding bouts); B The plot shows the phase (on the y-axis) of feeding bouts (Feeding) and general foraging activity (Foraging) during continued entrainment. The dotted line indicates the phase difference of feeding over foraging during the same time period. Positive phase difference indicates that feeding leads foraging. The x-axis shows the cumulative hours passed since disturbance due to mark-and-recapture (Cumulative ZT)