Data from: Effect of light-level geolocators on apparent survival of two highly aerial swift species

Michelangelo Morganti, Diego Rubolini, Susanne Akesson, Ana Bermejo, Javier De La Puente, Roberto Lardelli, Felix Liechti, Giovanni Boano, Erika Tomassetto, Mauro Ferri, Mario Caffi, Nicola Saino & Roberto Ambrosini
Light-level geolocators are currently widely used to track the migration of small-sized birds, but their potentially detrimental effects on survival of highly aerial species have been poorly investigated so far. We recorded capture-recapture histories of 283 common swifts Apus apus and 107 pallid swifts Apus pallidus breeding in 14 colonies in Italy, Spain, Sweden and Switzerland that were deployed with 10 different types of geolocators (‘geolocator birds’), and compared their survival with that of, respectively,...
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