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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Anim Behav. 2009 Jan 10;77(3):701–706. doi: 10.1016/j.anbehav.2008.11.020

Figure 1.

Figure 1

Selected songs of one of our focal male tropical mockingbirds in Villa de Leyva, Colombia. Lines above the spectrogram indicate syllables and numbers are used to identify syllable types. Grey boxes show how syllable types (in this case, types four and five) are combined in different ways to produce a virtually unlimited number of song types. The songs with the grey boxes were recorded in different years, suggesting that at least part of the syllable type repertoire is conserved throughout an individual’s life. The examples shown were chosen to illustrate the vocal diversity of male tropical mockingbirds and do not reflect the actual types included in our analysis.