Spectrograms and oscillograms of the advertisement call of Pristimantis festae. A detail of a complete advertisement call with two notes (ZSFQ 4440, SVL 18.7 mm, 7.7 °C air temperature, 85% relative humidity) B call with visible side bands (ZSFQ 4525, SVL 15.73 mm, 8.1 °C air temperature, 93% relative humidity) C single call with its characteristic harmonics (ZSFQ 4516, SVL 16.75 mm, 10.2 °C air temperature, 76% relative humidity) D detail of pulsed note (ZSFQ 4528, SVL 13.25 mm, 11.6 °C air temperature, 82% relative humidity). Spectrograms obtained using the Hann window at 99% overlap, 512 samples of FFT size and 3 dB filter bandwidth of 124 Hz.