Spectral peaks in synthetic calls
| Species . | Low-frequency peak (Hz) . | High-frequency peak (Hz) . | Relative amplitude (dB) . |
|---|---|---|---|
| H. versicolor | 1.1 | 2.2 | 6±2 |
| H. chrysoscelis | 1.2 | 2.4 | 6±2 |
| H. avivoca | 1.3* | 2.6 | 0±2 |
| H. arenicolor | 0.65 | 2.6 | 0±2 |
| Species . | Low-frequency peak (Hz) . | High-frequency peak (Hz) . | Relative amplitude (dB) . |
|---|---|---|---|
| H. versicolor | 1.1 | 2.2 | 6±2 |
| H. chrysoscelis | 1.2 | 2.4 | 6±2 |
| H. avivoca | 1.3* | 2.6 | 0±2 |
| H. arenicolor | 0.65 | 2.6 | 0±2 |
The conspecific advertisement call lacks energy at this frequency, which was chosen because the low-frequency peaks in the calls of the two closest relatives of this species are centered at about one-half of the peak frequency of the typically dominant band