GPS track of the test flight. Colours correspond to altitude in m (hover for info).
Supplement
S1 Measurement error
S2 Test flight GPS track
Altitude
Speed
GPS track of the test flight. Colours correspond to speed in ms-1 (hover for info).
Distance travelled between signal bursts
Note
Assume reasonable airspeeds of songbirds to be \(\text{Log-Normal}(\log(12), 0.2)\) ms-1.
S3 Receiver network
Map of the receiver network during the test flight. Mean antenna beams are shown for each bearing, with a range of 10 km. Antennas displayed in red were nonfunctional.
S4 Detections by Motus
Number of detections
Note
The maximum timestamp difference between a Motus detection and a GPS fix is 6.3 s.
| tagDeployID | date | burst interval [s] | n |
|---|---|---|---|
| 56173 | 2024-07-09 | 7.1 | 1364 |
| 56174 | 2024-07-09 | 7.3 | 1360 |
| 56175 | 2024-07-09 | 29.3 | 30 |
| 56176 | 2024-07-09 | 29.3 | 18 |
| 56178 | 2024-07-09 | 19.1 | 132 |
| 56825 | 2024-07-11 | 7.1 | 1032 |
| 56826 | 2024-07-11 | 7.3 | 1702 |
| 56827 | 2024-07-11 | 29.3 | 82 |
| 56828 | 2024-07-11 | 29.3 | 70 |
| 56830 | 2024-07-11 | 19.1 | 114 |
Number of synchronous detections
Positions with detections by Motus
GPS track of the test flight. Motus receivers with detections are shown in black, blue circles indicate GPS fixes with detections by Motus receiver.
S5 Compare tracks
Note
dTimeis the time interval in minutes for which point estimates are calculated.aRangeis the assumed maximum detection range of antennas in km.- Unless otherwise specified, the number of states used in the model is 2.