Data from: Study "Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)"

When using this dataset, please cite the original article.

Meier CM, Karaardıç H, Aymí R, Peev SG, Witvliet W, Liechti F. 2020. Population-specific adjustment of the annual cycle in a super-swift trans-Saharan migrant. J Avian Biol. 51(11):e02515. doi:10.1111/jav.02515

Additionally, please cite the Movebank data package:

Meier CM, Liechti F (2020) Data from: Study "Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)". Movebank Data Repository. doi:10.5441/001/1.31v444sc
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Package Identifier doi:10.5441/001/1.31v444sc  
 
Abstract For migratory birds optimal timing of the onset of reproduction is vital, especially when suitable conditions for reproduction occur only for a short while during the year. With increasing latitude the suitable period becomes shorter and we expect the organization of annual cycle to be more synchronized to the local conditions across individuals of same population. This should result in low variation of arrival and departure date in breeding sites at higher latitudes. We quantify the temporal and geographical variation in pre‐ and post‐breeding migration between individuals from four different populations of alpine swifts Tachymarptis melba along a latitudinal gradient. We tracked 215 individuals in three years with geolocators. The two western and two eastern populations showed separate migratory flyways and places of residence in Africa. Length of stay at the breeding sites was negatively correlated with latitude and differed by more than a month between populations. Duration of migration was similarly short in all populations (median 6.2 days in autumn and 8.7 days in spring). However, variation in timing of migration was unrelated to latitude and individuals everywhere arrived in the same asynchrony at the breeding site.
Keywords alpine swift, animal movement, animal tracking, annual cycle, Apus melba, avian migration, geolocator, light-level logger, Tachymarptis melba,

Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)-barometer View File Details
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Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)-light-levels View File Details
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Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)-twilights View File Details
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Switzerland Lenzburg - Long term study on migratory movement of Alpine swifts (Apus melba)-reference-data View File Details
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