Song: The song is a rapid series of dry knocks, ending with a few heavily accented two syllable notes: "kekekekekekekekkeke-kidu-kidu-kidu", also a series of resonant, guttural hoots. Difficult to distinguish from Black-billed Cuckoo by voice alone.
Sound: Fernando González-García (Biblioteca de Sonidos Aves de México); 2005 Jun 5; Mexico, Veracruz; Instituto de Ecologia, A.C., Xalapa; Adult; Call;