Figure 3 in Breeding and parental behaviour in the glass frog Centrolene savagei (Anura: Centrolenidae)

Figure 3. Oscillogram, spectrogram and power spectrum of calls emitted during courtship behaviour in Centrolene savagei at Bosque de Yotoco, Valle del Cauca, Colombia. Two kinds of calls were recorded: type I (A) and type II (B). Male body size = 22.6 mm; male body temperature = 18.3°C (see text and Table 2 for additional information).