Song: Song is a rising buzzy trill ending with an abrupt and emphatic "flip". Beginning may be continuous or not: "bree-bree-breee-up" or "breeeeee-up". Also gives a more complex series of buzzy notes, but still usually ending with the "flip".
Sound: Don J. Kerr; 1999 Jun 16; Canada, Ontario; N.Bruce Pen; Adult; Primary Sound;