Song: Variable song made up of liquid warbles, twittering and occasional sharp "tik" notes: "su-wee twee peek!". Calls variable including "chi-chi-chit" notes, a whining "seeur", and thin "sii" notes.
Sound: Fernando González-García (Biblioteca de Sonidos Aves de México); 2004 Mar 21; Mexico, Veracruz; Cerro Tepeczala, Amatlán de los Reyes; Flock/Group; Mixed; Primary Sound;