Table 1 Locations and sample sizes of the different study populations.

Central GPS location of study sites; number of birds tagged (in parenthesis: number of birds with high-resolution data, that is, GPS and acceleration data taken every 5 min); number of birds still alive after 5 and 12 months (in parenthesis: percentage of total number tagged).

PopulationCentral GPS coordinates
of study site
No. of birds
LongitudeLatitudeTagged (high resolution)Alive after 5 monthsAlive after 12 months
Armenia44°31′1.2″40°12′0″8 (1)2 (25%)2 (25%)
Greece26°10′4.8″40°53′27.6″10 (1)5 (50%)2 (20%)
Poland15°30′7.2″51°56′13.2″4 (2)2 (50%)2 (50%)
Russia37°23′31.2″55°38′49.2″10 (4)7 (70%)4 (40%)
Spain−6°1′33.6″37°21′25.2″11 (1)3 (27%)1 (9%)
Southwest Germany8°56′2.4″47° 45′ 10.8″12 (5)6 (46%)5 (38%)
Tunisia10°15′39.6″36° 48′ 32.4″9 (2)4 (44%)2 (22%)
Uzbekistan69°2′16.8″40° 59′ 45.6″6 (3)4 (67%)3 (50%)
TOTAL70 (19)33 (47%)21 (30%)