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. 2014 Dec 16;4:7508. doi: 10.1038/srep07508

Figure 3. Example of non-focal paired burst bouts during bottom feeding events.

Figure 3

(a) Dive profile of mn09_108a, ‘Division' showing time of paired bursts sound production. Red = focal-associated (SNR > 20 dB), Yellow = non-focal (15 dB < SNR < 20 dB), Blue = non-focal (SNR < 15 dB). (b) Example of timing of rolls relative to SNR < 15 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 high SNR paired burst bout. Rolls that deviate >45° from vertical orientation of the whale are indicated in the track ribbon by yellow coloration. Note that multiple bottom feeding rolls in this track had no evidence of any paired burst production.