Figure 2. Example of focal paired burst bouts during bottom feeding events.

(a) Dive profile of mn06_200c, ‘Spoon', showing time of paired burst sound production. Red = focal-associated (SNR > 20 dB), Yellow = non-focal (15 dB < SNR < 20 dB). (b) Example of timing of rolls relative to SNR > 20 dB paired burst production. Boxes mark the beginning and end of paired burst bouts. Arrows are placed above the boxes indicating the end time of a focal-associated paired burst bout. Rolls that deviate >45° from vertical orientation of the whale are indicated in the track ribbon by yellow coloration. All bottom feeding rolls were associated with the end of a paired burst bout in this example.