Skip to main content

Table 2 Summary table comparing the mean values of autumn and spring migration parameters generated from tagged Greater White-fronted Geese (Anser albifrons) fitted with solar-powered GPS/GSM telemetry devices in China 2014‒2016, which provided full information on at least one complete spring and autumn migration used in the current analysis

From: Spring migration duration exceeds that of autumn migration in Far East Asian Greater White-fronted Geese (Anser albifrons)

Measures Spring (mean ± SD) Autumn (mean ± SD)
Departure date (Julian date) 83 ± 9 264 ± 4
Arrival date (Julian date) 162 ± 10 300 ± 9
Migration duration (days) 79 ± 12 35 ± 7
Migration distance (km) 6111 ± 477 5733 ± 363
Migration speed (km/day) 79 ± 16 170 ± 46
Total travel days (days) 20 ± 5 12 ± 4
Travel speed (km/day) 327 ± 93 526 ± 155
Number of stopovers 6.1 ± 1.9 2.1 ± 0.8
Number of flight Legs 7.1 ± 1.9 3.1 ± 0.8
Stopover duration (days) 59 ± 16 23 ± 6
Step length (km) 787 ± 302 1710 ± 476
Straightness index 0.81 ± 0.06 0.86 ± 0.06