Song: Voice varies geographically, song is a series of rich piping whistles "wip-it wip-it wip-it" or "ri chee'choo" repeated 3-5 times often as a duet.
Sound: Fernando González-García (Biblioteca de Sonidos Aves de México); 2005 Apr 30; Mexico, Veracruz; Pinoltepec, Emiliano Zapata; Adult; Primary Sound;