Figure 3
Auditory-independent regulation of phrase repertoires between the 1st and 2nd years. (a) Examples of recurrent, extinct, and added syllables of two intact and deafened canaries. (b) Recurrence of individual differences of syllable acoustics in intact and deafened canaries. Scatter plots of recurrent syllables (average of 20 syllables per a phrase) from intact and deafened canaries (n = 3 birds each; two example syllables from a bird). Open and closed symbols indicate syllables in the 1st and 2nd years, respectively. (c) Examples of proportion of syllable types in an intact and a deafened bird. The alphabet indicates phrase types (e.g., “r,” “e,” and “a” represent recurrent, extinct, and added syllable types, respectively). (d) Frequency of occurrence per syllable type. Recurrent, extinct, and added syllables are colored with blue, yellow, and green, respectively. Error bars: SEM. (e) Principal component analysis using syllable acoustic parameters on phrase types in intact and deafened birds. Each dot indicates a syllable type.
