Temporal regularity increases with repertoire complexity in the Australian pied butcherbird's song.

ABSTRACT: Music maintains a characteristic balance between repetition and novelty. Here, we report a similar balance in singing performances of free-living Australian pied butcherbirds. Their songs include many phrase types. The more phrase types in a bird's repertoire, the more diverse the singing performance can be. However, without sufficient temporal organization, avian listeners may find diverse singing performances difficult to perceive and memorize. We tested for a correlation between the complexity of song repertoire and the temporal regularity of singing performance. We found that different phrase types often share motifs (notes or stereotyped groups of notes). These shared motifs reappeared in strikingly regular temporal intervals across different phrase types, over hundreds of phrases pro

SUBMITTER: Janney E 

PROVIDER: S-EPMC5043318 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature