Fig. 1From: Vocal behavior of Crested Guineafowl (Guttera edouardi) based on visual and sound playback surveys in the Umhlanga Lagoon Nature Reserve, KwaZulu-Natal province, South AfricaSpectrogram showing the terminology used in the text: a = single syllable; b = two elements of the syllable; c = phrase with syllables; d (arrow) = high frequency; e (arrow) = low frequencyBack to article page