Citrine Wagtail migration on the Indo-European flyway: a first geolocator track reveals alternative migration route and endurance flights to cross ecological barriers

Table 1 Migration parameters of a Citrine Wagtail breeding in NE Poland estimated from geolocator data

From	Departure date	Arrival date	Migration duration (days)	Number of stopovers	Duration of movement (days)	Stopover duration (days)	Distance (km)	Migration speed (km/day)	Movement speed (km/day)
Autumn migration
Breeding site	2016-07-13	2016-09-21	70	4	13.5	56.5	4800	69	356
Post-breeding site	2016-08-14	2016-09-21	38.5	3	12	26.5	4450	116	371
Spring migration
Wintering grounds	2017-03-19	2017-04-09¹	21.5	3	14	7.5	5640	262	403
Wintering grounds	2017-03-19	2017-04-21²	33	> 3	27.5	22	5640	171	205

Distances are reportd to nearest 10 km. Dates in the end of spring migration is partly missing due to improper light measurements (see methods) thus the ¹ arrival date is the date 2 days after the last stopover site position while the ² is the first light logger position at the breeding sites when the logger starts working again. Arrival dates indicate the presumed period when the individual arrived to breeding grounds

ISSN: 2053-7166