Table 2.
Song characteristics of each individual.
| Birds | WM1 | WM2 | WM3 | WM4 | WM5 | WM6 | WM7 | WM8 | WM9 | WM10 | WM11 | WM12 | WM13 | WM14 | WM15 | WM16 | WM17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total number of song bouts | 120 | 47 | 97 | 62 | 49 | 52 | 74 | 23 | 32 | 45 | 26 | 47 | 31 | 24 | 27 | 25 | 35 |
| Total number of whistles | 331 | 130 | 146 | 103 | 112 | 126 | 198 | 62 | 124 | 268 | 58 | 346 | 162 | 135 | 158 | 208 | 211 |
| Proportion bouts including warbling % (Number) | 67 (81) | 77 (36) | 60 (58) | 84 (52) | 55 (27) | 40 (21) | 61 (45) | 57 (13) | 53 (17) | 40 (18) | 58 (15) | 53 (25) | 17 (5) | 8 (2) | 7 (2) | 12 (3) | 29 (10) |
| Proportion bouts including whistles % (Number) | 92 (110) | 100 (47) | 80 (78) | 69 (43) | 82 (40) | 87 (45) | 82 (61) | 91 (21) | 81 (26) | 96 (43) | 77 (20) | 98 (46) | 97 (30) | 92 (22) | 100 (27) | 100 (25) | 89 (31) |
| Proportion whistle sequences followed by warbling % (Number) | 65 (71) | 77 (36) | 50 (39) | 80 (33) | 42 (18) | 31 (14) | 52 (32) | 52 (11) | 42 (11) | 37 (16) | 45 (9) | 52 (24) | 13 (4) | 0 (0) | 7 (2) | 12 (3) | 19 (6) |
| Number whistle per sequence X ± sd | 3.1 ± 1.9 | 2.7 ± 1.8 | 2 ± 1.5 | 2.5 ± 1.8 | 2.4 ± 1.6 | 2.9 ± 1.7 | 3.2 ± 3.3 | 2.9 ± 2.9 | 4.8 ± 4.4 | 6.2 ± 4.6 | 2.9 ± 1.8 | 7.5 ± 5.4 | 5.4 ± 4.2 | 6.1 ± 6.0) | 5.9 ± 3.7 | 8.3 ± 8.4 | 6.8 ± 6.2 |
| Proportion of whistles followed by warbling % | 21 | 28 | 27 | 32 | 16 | 11 | 16 | 18 | 9 | 6 | 18 | 7 | 2 | 0 | 1 | 1 | 3 |
| Proportion warbling preceded by whistle | 88 | 100 | 67 | 63 | 67 | 67 | 71 | 85 | 65 | 89 | 60 | 96 | 20 | 0 | 100 | 100 | 60 |
| Number whistle sequence/warbling sequence | 1.3 | 1.3 | 1.3 | 0.8 | 1.6 | 2.1 | 1.4 | 1.6 | 1.5 | 2.4 | 1.5 | 1.8 | 6 | 11 | 13 | 8.3 | 3.1 |