Table 1 Details of the tracking data from the equipped jackdaws over their annual life cycle
Annual cycle period | Number of year-birds (individuals) | Tracking days | Mean number of locations per tracking day ± SD | |
|---|---|---|---|---|
Total | Mean ± SD per bird (range) | |||
Nest building | 18 (18) | 156 | 8.7 ± 4.6 (1–19) | 150.0 ± 10.1 |
Incubation | 14 (14) | 61 | 4.4 ± 3.6 (1–11) | 173.8 ± 3.7 |
Chick rearing | 19 (16) | 61 | 3.2 ± 2.3 (1–8) | 187.2 ± 2.1 |
Post fledging | 17 (14) | 139 | 8.2 ± 4.5 (1–15) | 179.0 ± 4.7 |
Post breeding | 12 (12) | 77 | 6.4 ± 2.4 (2–10) | 129.0 ± 6.3 |
Wintering | 9 (9) | 38 | 4.2 ± 2.5 (1–8) | 105.6 ± 4.3 |