Table 3 Univariate measurements for song characteristics
N. inds. | N. str. | Duration (s) | Top freq. (Hz) | Bottom freq. (Hz) | Freq. bandwidth (Hz) | Peak freq. (Hz) | Mean freq. (Hz) | ||
|---|---|---|---|---|---|---|---|---|---|
Alpine Thrush | 8 | 79 | Mean | 2.57 | 8220.1 | 1678.9 | 6541.2 | 4177.2 | 4754.9 |
SD | 0.48 | 555.3 | 227.3 | 663.6 | 691.8 | 420.2 | |||
Range | 1.85–4.28 | 6505.7–9192.1 | 1176.7–2157.6 | 4691.6–7762.6 | 2812.5–5437.5 | 3699.1–6236.7 | |||
“Yunnan Thrush”/Alpine Thrush | 3 | 26 | Mean | 3.36 | 6915.9 | 1946.5 | 4969.4 | 3396.6 | 4611.0 |
SD | 0.39 | 537.2 | 179.5 | 548.9 | 227.0 | 652.3 | |||
Range | 2.62–4.40 | 5581.1–7811.5 | 1641.2–2256.9 | 3573.1–5802.6 | 3000–3750 | 3038.4–6138.3 | |||
Sichuan Forest Thrush | 17 | 168 | Mean | 4.38 | 7412.7 | 1141.2 | 6271.5 | 2517.3 | 4276.9 |
SD | 1.19 | 1305.7 | 158.5 | 1293.1 | 457.0 | 668.6 | |||
Range | 1.98–8.61 | 3231.4–10,011.0 | 676.2–1471.2 | 2157.5–8643.1 | 1894.9–5812.5 | 2152.7–5689.5 | |||
Himalayan Forest Thrush | 17 | 161 | Mean | 2.74 | 8023.7 | 1467.4 | 6556.4 | 3138.8 | 4745.5 |
SD | 0.51 | 952.9 | 182.1 | 991.7 | 572.0 | 474.0 | |||
Range | 1.24–5.58 | 4659.6–11,087.4 | 719.6–1914.0 | 2792.8–9701.5 | 2250.0–5625.0 | 3038.4–6236.7 | |||
Z. dixoni | 10 | 80 | Mean | 5.79 | 3949.9 | 1787.2 | 2162.7 | 2747.1 | 2868.6 |
SD | 4.53 | 331.7 | 193.5 | 402.7 | 182.5 | 182.2 | |||
Range | 0.78–19.73 | 3480.3–5349.7 | 1073.9–2048.4 | 1471.7–3520.1 | 2250.0–3100.8 | 2565.5–3589.7 | |||
Alpine versus “Yunnan”/Alpine | *** | *** | *** | *** | *** | ||||
Alpine versus Himalayan Forest | *** | *** | |||||||
Alpine versus Sichuan Forest | *** | *** | *** | *** | *** | ||||
Alpine versus Z. dixoni | *** | *** | *** | *** | *** | ||||
“Yunnan”/Alpine versus Himalayan Forest | *** | *** | *** | *** | ** | ||||
“Yunnan”/Alpine versus Sichuan Forest | *** | *** | *** | *** | |||||
“Yunnan”/Alpine versus Z. dixoni | *** | *** | * | *** | *** | *** | |||
Himalayan Forest versus Sichuan Forest | *** | *** | *** | *** | *** | ||||
Himalayan Forest versus Z. dixoni | *** | *** | *** | *** | *** | *** | |||
Sichuan Forest versus Z. dixoni | *** | *** | *** | *** | *** |