Table 1 Summary of species, individuals, tracks, days, locations and sampling frequencies included in the study.

From: Arctic avian predators synchronise their spring migration with the northern progression of snowmelt

Species

Number of ind.

Number of spring migr. tracks

Number of days per track (mean ± SD)

Number of locs per track (mean ± SD)

Sampling freq. (min, median, max)

Snowy owl

98

211

37 ± 35

403 ± 1008

1 second, 31 minutes, 36 days

Rough-legged buzzard

112

219

72 ± 54

727 ± 766

1 second, 2 minutes, 39 days

Peregrine falcon

15

18

32 ± 21

76 ± 81

1 second, 8 minutes, 22 days