Song: Song a delicate distinct insect-like trill "siiiiirrrr" or "tiiiiiiriririririr". High soft "sik" or "tsi" call notes.
Sound: Fernando González-García (Biblioteca de Sonidos Aves de México); 2005 Jul 9; Mexico, Veracruz; La Tinaja, Emiliano Zapata; Adult; Male; Primary Sound;