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Table 2 Comparison of spring migration parameter values (Mean ± SD) from the three groups of Eurasian Spoonbill of different summer provenances in China from 2016 to 2019, based on data from solar GPS/GSM satellite trackers

From: Migration routes, behavior and protection status of Eurasian Spoonbills (Platalea leucorodia) wintering in China

Season Breeding provenance
(Winter area)
Bird ID Start date End date Migration
distance (km)
Migration
duration (days)
Migration
speed (km/day)
Number of
stopovers
Stopover
duration (days)
Daily travel
speed (km/day)
Straightness
index
Spring Naoli River
(Jiangsu coast)
Mean ± SD May 13 ± 3.0
(days)
Jun 3 ± 11.5 (days) 2432 ± 590 21.4 ± 14.4 173.9 ± 89.3 1.5 ± 0.5 12.4 ± 10.4 302± 67 0.78 ± 0.18
Median 2017/5/13 2017/6/3 2432 21.4 173.9 1.5 12.4 302 0.78
ES01 2017/5/16 2017/5/23 1842 7 263.2 1 2.0 368 0.96
ES02 2017/5/10 2017/6/15 3022 35.8 84.5 2 22.9 235 0.6
Inner Mongolia
(Yangtze River)
ES05 2018/2/13 2018/4/16 2452 61.4 39.9 4 53.8 320 0.86
Western Mongolia
(Yangtze River)
Mean ± SD May 6 ± 7.32 (days) May 19 ± 15.67 (days) 1897 ± 500 13.07 ± 8.83 372.8 ± 371.1 1 ± 0.82 9.6 ± 7.4 611 ± 205 0.82 ± 0.02
Median 2019/5/9 2019/5/16 1551 14.3 112.0 1 10.6 508 0.82
ES06 2019/5/2 2019/5/16 1551 14.3 108.9 1 10.6 428 0.84
ES07 2019/5/17 2019/6/9 2604 23.3 112.0 2 18.1 508 0.79
ES08 2019/5/1 2019/5/2 1535 1.7 897.6 0 0 898 0.82
  1. Only migration information from the ten individuals from which we received complete data from at least one full migration episode is presented