Song: Song an accelerating trill "tsi siiiiiiiiiiiiiiiiiiiiiiiiiiirrrrrrrrrrr" descending in pitch. Call notes are high chipping "tisp" or "ssiu" notes.
Sound: Fernando González-García (Biblioteca de Sonidos Aves de México); 2004 Apr 7; Mexico, Veracruz; Cerro Tepeczala, Amatlán de los Reyes; Adult; Primary Sound;