Song: Song a series of clear short single syllable whistled notes, delivered in a hesitant jerky rhythm: "chee-choo' chee'choo chree chu-chu-chu-chu-chu-chee". Most common call is a shot whistled "chee-oo" like a single song syllable. Alarm call is a rasping chatter. Contact call is a ringing nasal "grink" or "ike" note.
Sound: Kevin J. Colver; May; TX; Adult; Primary Sound;