Table 1.
Comparisons of movement properties between GPS tracking datasets (mean ± s.d.).
| Israel low-resolution | Israel high-resolution | France high-resolution | |
|---|---|---|---|
| tracked individuals (#) | 38 | 19 | 8 |
| sex ratio (male : female : unknown) | 11 : 19 : 8 | 5 : 7 : 7 | 2 : 4 : 2 |
| age group (less than 2 months : older) | 9 : 29 | 9 : 10 | 0 : 8 |
| age (years) | 7.5 ± 4.1 | 5.3 ± 3.4 | 15.0 ± 7.5 |
| breeding (individuals) | — | 8 | 7 |
| tracking duration (days) | 106 ± 100 | 29.9 ± 29.1 | 8.9 ± 9.5 |
| body mass (kg) | 8.16 ± 0.64 | 8.46 ± 0.99 | |
| folded wing (mm) | 725 ± 25 | 716 ± 18 | |
| daily tracks characteristics | |||
| daily distance travelled (km) | 90 ± 30 | 160 ± 110 | 141 ± 92 |
| straightness of the daily path | 0.35 ± 0.06 | 0.6 ± 0.13 | 0.65 ± 0.04 |
| daily maximum displacement (km) | 30.4 ± 13.4 | 32.5 ± 15. 3 | 23.8 ± 11.6 |
| flight altitude above ground (m) | 442 ± 124 | 462 ± 58 | 338 ± 75 |
| movement phenomena (days) | |||
| long-range movements | 86 | ||
| home-range foraging | 6903 | ||
| movement phases (events) | |||
| inbound flights | 230 | ||
| outbound flights | 549 | ||
| fundamental movement elements | |||
| linear soaring (events per individual) | 207 ± 293 | 15.8 ± 18.1 | 2.3 ± 1.5 |
| thermal soaring (events per individual) | 1229 ± 1115 | 194 ± 267 | 88 ± 162 |
| inter-thermal glides (events per individual) | 1291 ± 1461 | 217 ± 261 | 78 ± 143 |
| climb rate (vertical speed) (m s−1) | 1.2 ± 0.7 | 1.2 ± 1.0 | 1.4 ± 0.9 |
| inter-thermal glide speed (m s−1) | 16.7 ± 1.1 | 16.6 ± 1.9 | 16.2 ± 2.9 |