No “carry-over” effects of tracking devices on return rate and parameters determining reproductive success in once and repeatedly tagged common swifts (Apus apus), a long-distance migratory bird

Table 1 Overview of logger types (company, weight and presence of light stalk) and mean weight of logger birds and non-logger birds in the years 2012–2019

Year	Logger type	Company	Logger weight including body harness [g]	Light stalk	Mean weight of logger birds [g]	Mean weight of non-logger birds [g]
2012	MK5540	Lotek (former Biotrack Ltd), Wareham, UK	0.68	No	40.1 ± 2.7	44.4 ± 2.3
2013	ML6590	Lotek (former Biotrack Ltd), Wareham, UK	0.79	No	45.9 ± 2.9	40.8 ± 3.6
2014	SOI-GDL small	Swiss Ornithological Institute, Sempach, CH	0.64	Yes	46.2 ± 1.9	44.2 ± 2.6
2015	SOI-GDL2	Swiss Ornithological Institute, Sempach, CH	0.73	Yes	44.6 ± 3.4	39.6 ± 2.5
2016	SOI-GDL PAM	Swiss Ornithological Institute, Sempach, CH	1.72	Yes	43.6 ± 4.4	41.9 ± 6.2
2017	SOI-GDL3_ PAM	Swiss Ornithological Institute, Sempach, CH	1.60	No	40.9 ± 2.7	42.5 ± 2.8
2018	SOI-GDL PAM & nanoFix^TMGEO-Mini	Swiss Ornithological Institute, Sempach, CH & PathTrack Ltd, Otley, UK	1.48 & 1.30	No	45.2 ± 3.6	40.5 ± 3.7
2019	nanoFix^TMGEO-Mini	PathTrack Ltd, Otley, UK	1.30	No	44.8 ± 2.5	42.0 ± 4.7

ISSN: 2051-3933