Identification of vocal individuality in male cuckoos using different analytical techniques

Table 1 Call features of male Common Cuckoos based on 124 calls from 13 males

Variable*	Mean ± SD	Minimum	Maximum	CV_w	CV_a	CV_a/CV_w
t _dur1 (s)	0.067 ± 0.009	0.050	0.080	0.154	0.130	0.844
t _dis1 (s)	0.033 ± 0.006	0.020	0.040	0.284	0.196	0.690
f _sta1 (kHz)	0.762 ± 0.036	0.707	0.828	0.031	0.047	1.519
f _end1 (kHz)	0.727 ± 0.028	0.668	0.757	0.036	0.039	1.095
f _peak1 (kHz)	0.830 ± 0.040	0.775	0.918	0.027	0.048	1.769
f _min1 (kHz)	0.722 ± 0.027	0.668	0.755	0.032	0.037	1.157
f _max1 (kHz)	0.839 ± 0.042	0.795	0.924	0.015	0.050	3.399
t _int (s)	0.226 ± 0.035	0.170	0.270	0.051	0.155	3.023
t _dur2 (s)	0.117 ± 0.017	0.100	0.150	0.108	0.147	1.356
t _dis2 (s)	0.052 ± 0.011	0.040	0.070	0.296	0.216	0.729
f _sta2 (kHz)	0.660 ± 0.025	0.620	0.705	0.011	0.038	3.283
f _end2 (kHz)	0.665 ± 0.026	0.620	0.713	0.020	0.039	1.909
f _peak2 (kHz)	0.673 ± 0.026	0.623	0.721	0.008	0.038	4.603
f _min2 (kHz)	0.657 ± 0.025	0.614	0.705	0.017	0.038	2.222
f _max2 (kHz)	0.676 ± 0.026	0.629	0.724	0.012	0.038	3.151

* Duration of the element (t _dur1, t _dur2); duration from the start of element to the point of maximum amplitude within that element (t _dis1, t _dis2); frequency at the start point of the element (f _sta1, f _sta2); frequency at the end point of the element (f _end1, f _end2); minimum frequencies of the element (f _min1, f _min2); maximum frequency of the element (f _max1, f _max2); frequency of the maximum amplitude within the element (f _peak1, f _peak2); time interval between the first and second element (t _int)

ISSN: 2053-7166