Table 1 Summary of wild migratory birds marked and tracked in our study. WT-200, 300 and 500 are the transmitters for mid-large sized waterfowl based on a solar-powered cellular telemetry system [KoEco, The Republic of Korea]. The weight of the device is less than 27 g and it can be used for birds heavier than 700 g (e.g. Mallard). Platform Terminal transmitter (PTT) is the transmitter for small sized waterfowl based on a solar-powered satellite tracking system [Microwave Telemetry, Inc., MD, US]. The weight of device is less than 9.5 g and it can be used for birds lighter than 700 g (e.g. Common Teal).
Species | Year of marking | Tracking device | The number of tracked birds | Tracked birds (success rate) | Marked birds | |||
|---|---|---|---|---|---|---|---|---|
Period 1 | Period 2 | Period 3 | Period 4 | |||||
Mallard (Anas platyrhynchos) | 2013 | WT-200 | 8 | 13 | 12 | 0 | 19 (43.2%) | 44 |
2014 | WT-300 | 3 | 34 | 16 | 3 | 48 (56.5%) | 85 | |
2015 | WT-500 | 52 | 99 | 48 | 24 | 156 (88.6%) | 176 | |
2016 | WT-500 | 2 | 1 | 19 | 14 | 19 (95.0%) | 20 | |
Sub-total | 65 | 147 | 95 | 41 | 242 (74.5%) | 325 | ||
Common Teal (Anas crecca) | 2014 | PTT | 3 | 3 | 7 | 6 | 7 (50%) | 14 |
2015 | PTT | 0 | 5 | 1 | 0 | 5 (62.5%) | 8 | |
Sub-total | 3 | 8 | 8 | 6 | 12 (54.5%) | 22 | ||
Spot-billed Duck (Anas poecilorhyncha) | 2013 | WT-200 | 0 | 0 | 7 | 4 | 7 (41.2%) | 17 |
2014 | WT300 and PTT | 6 | 34 | 20 | 11 | 36 (61.0%) | 59 | |
2015 | WT500 and PTT | 14 | 44 | 17 | 11 | 47 (68.1%) | 69 | |
Sub-total | 20 | 78 | 44 | 26 | 90 (62.0%) | 145 | ||
Total | 88 | 233 | 147 | 73 | 344 (69.9%) | 492 | ||
