Evolution of chain migration in an aerial insectivorous bird, the common swift Apus apus

dc.contributor.affiliationLund University - Akesson, Susanne
dc.contributor.affiliationBritish Trust for Ornithology - Atkinson, Phil
dc.contributor.affiliationSociedad Española de Nefrología - Bermejo, Ana
dc.contributor.affiliationSociedad Española de Ornitología* - de la Puente, Javier
dc.contributor.affiliationAssociazione Ornitologi Emilia Romagna* - Ferri, Mauro
dc.contributor.affiliationBritish Trust for Ornithology - Hewson, Chris
dc.contributor.affiliationLund University - Holmgren, Jan
dc.contributor.affiliationLund University - Kaiser, Erich
dc.contributor.affiliationLund University - Kearsley, Lyndon
dc.contributor.affiliationUniversity of Groningen - Klaassen, Raymond
dc.contributor.affiliationLund University - Kolunen, Heikki
dc.contributor.affiliationLund University - Matsson, Gittan
dc.contributor.affiliationAssociazione Ornitologi Emilia Romagna* - Minelli, Fausto
dc.contributor.affiliationLund University - Norevik, Gabriel
dc.contributor.affiliationUniversity of Helsinki - Pietiäinen, Hannu
dc.contributor.affiliationSwedish University of Agricultural Sciences - Singh, Navinder J
dc.contributor.affiliationIstituto Superiore per la Protezione e la Ricerca Ambientale - Spina, Fernando
dc.contributor.affiliationCzech Society for Ornithology - Viktora, Lukas
dc.contributor.affiliationLund University - Hedenstrom, Anders
dc.contributor.authorAkesson, Susanne
dc.contributor.authorAtkinson, Phil
dc.contributor.authorBermejo, Ana
dc.contributor.authorde la Puente, Javier
dc.contributor.authorFerri, Mauro
dc.contributor.authorHewson, Chris
dc.contributor.authorHolmgren, Jan
dc.contributor.authorKaiser, Erich
dc.contributor.authorKearsley, Lyndon
dc.contributor.authorKlaassen, Raymond
dc.contributor.authorKolunen, Heikki
dc.contributor.authorMatsson, Gittan
dc.contributor.authorMinelli, Fausto
dc.contributor.authorNorevik, Gabriel
dc.contributor.authorPietiäinen, Hannu
dc.contributor.authorSingh, Navinder J
dc.contributor.authorSpina, Fernando
dc.contributor.authorViktora, Lukas
dc.contributor.authorHedenstrom, Anders
dc.date.accessioned2025-03-24T15:23:19Z
dc.date.issued2021-09-03
dc.date.issued2021-09-03
dc.descriptionSpectacular long-distance migration has evolved repeatedly in animals enabling exploration of resources separated in time and space. In birds, these patterns are largely driven by seasonality, cost of migration, and asymmetries in competition leading most often to leap-frog migration, where northern breeding populations winter furthest to the south. Here we show that the highly aerial common swift Apus apus, spending the non-breeding period on the wing, instead exhibits a rarely-found chain migration pattern, where the most southern breeding populations in Europe migrate to wintering areas furthest to the south in Africa, while the northern populations winter to the north. The swifts concentrated in three major areas in sub-Saharan Africa during the non-breeding period, with substantial overlap for nearby breeding populations. We found that the southern breeding swifts were larger, raised more young, and arrived to the wintering areas with higher seasonal variation in greenness (Normalized Difference Vegetation Index, NDVI) earlier than the northern breeding swifts. This unusual chain migration pattern in common swifts is largely driven by differential annual timing and we suggest it evolves by prior occupancy and dominance by size in the breeding quarters and by prior occupancy combined with diffuse competition in the winter.
dc.identifierhttps://doi.org/10.5061/dryad.cz8w9gj1w
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/11093
dc.rightsOpen
dc.rights.licensecc-zero
dc.titleEvolution of chain migration in an aerial insectivorous bird, the common swift Apus apus
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