Supplementary Figure 8: Segmentation and classification of all vocalizations in a bird group
From: Reconstruction of vocal interactions in a group of small songbirds

(a) Shown are spectrograms of example vocalizations in individual birds recorded with back-pack microphones. Song motifs consist of syllables labeled “A”, “B”, and “C”, and introductory notes labeled “I”. Only bird 1 produced distance calls (such calls are relatively rare in domesticated populations of zebra finches). (b) A 2.5-h temporal sequence of morning vocalizations. The zero time point marks the lights-on event at 7 a.m. Each vocalization (distance-call, call, introductory note, syllables: A, B, C) is represented by a vertical line of corresponding color. (c) A magnified 25-s episode taken from (b) during which all four animals sung. This interval corresponds to the spectrogram shown in Supplementary Figure 7.