Verdón (Arg, Bol), Sabiá-do-banhado (Br). Pajonalero (Uru), Havia kapi'i (Par).
Orange bill. Head, throat and breast grey, darker face. Above olive, streaked (eastern form) or plain (western form). Large tail olive.
a sharp 'quit' contact call; song starts high-pitched and thin, then becomes quite musical '<
Tall wet grasslands (eastern form) or scrubby hillsides (western form).