Song: Song an accelerating series of 4-6 hollow squeaky whistles run into an accelerating series: "peep peep peep peep pii-pii-pii-pii-peet" or "chiink chiink chiink chiink chih-chih-chih-chih-chih. Call notes include a tinny "beehk" or 'chiink" and exciting churring and bickering.
Sound: Kevin J. Colver; Jun; AZ; Adult; Male; Primary Sound;