Figure 3.

Male vocal responses to rapping and to ticking. (A) Oscillographs of rapping and the male’s response. At the onset of rapping (○), the male switches to the answer call (upper trace). Rapid bouts of rapping maintain answer calling. When raps decrease in frequency (lower trace), the male reverts to advertisement calling. (B) Oscillographs of ticking and the male’s response. The male continues advertisement calling during the first several seconds of ticking (○) but then falls silent (lower trace). The female continues ticking after male calling stops.