ID = individual identity SEX = sex (0 = female, 1 = male) AGE = age (at capture; 0 = juvenile, 1 = after second year) COUNTRY = country (3-letter code) REGION = region (BAL = Balkan, IBE = Iberian, ITA = Italian) DEVICE = device type (ARGOS = Argos PTT, GLS = light-level geolocator, GPS = archival GPS-UHF tag) REPEAT = year of tracking (1 = first year of tracking, 2 = second year of tracking) LON_B = longitude of breeding site LAT_B = latitude of breeding site LON_NB = longitude of sub-Saharan non-breeding area LAT_NB = latitude of sub-Saharan non-breeding area MIN_DIST = minimum migration distance (km) ONSET_POB = onset of post-breeding migration (day 1 = Jan 1) END_POB = end of post-breeding migration (day 1 = Jan 1) TRACK_POB = track length of post-breeding migration (km) LON25_POB = longitude at 25° N during post-breeding migration (°) STRAIGHT_POB = track straightness of post-breeding migration SPEED_POB = speed of post-breeding migration (km/day) EW_DEV_POB = E-W deviation during post-breeding migration (km) LON_END_POB = longitude of post-breeding migration end (°) LAT_END_POB = latitude of post-breeding migration end (°) ONSET_PRB = onset of pre-breeding migration (day 1 = Jan 1) END_PRB = end of pre-breeding migration (day 1 = Jan 1) TRACK_PRB = track length of pre-breeding migration (km) LON25_PRB = longitude at 25° N during pre-breeding migration (°) STRAIGHT_PRB = track straightness of pre-breeding migration SPEED_PRB = speed of pre-breeding migration (km/day) EW_DEV_PRB = E-W deviation during pre-breeding migration (km) LON_START_PRB = longitude of pre-breeding migration onset (°) LAT_START_PRB = latitude of pre-breeding migration onset (°)