Abstract
AbstractTemporal patterning of flight song activity was examined in a population of Lesser Skylarks in Viet Nam. Onset and termination of songs were timed. Temporal dispersion of songs was analyzed from the distribution of intersong intervals, and the tendency of songs to be started prior to, shortly after, or long after cessation of a neighbor's song was examined. Skylarks tended to sing sequentially, clustering their songs in time after long periods of silence. However, they showed a strong tendency to avoid overlapping songs, perhaps because of the possibility of jamming by songs of neighbors. These two factors, intraspecific social stimulation and temporal avoidance, appear to be important determinants of singing behavior in this species.
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