Eco-evolutionary drivers of avian migratory connectivity

Migratory connectivity, reflecting the extent by which migrants tend to maintain their reciprocal positions in seasonal ranges, can assist in the conservation and management of mobile species, yet relevant drivers remain unclear. Taking advantage of an exceptionally large (~150,000 individuals, 83 species) and more-than-a-century-long dataset of bird ringing encounters, we investigated eco-evolutionary drivers of migratory connectivity in both short- and long-distance Afro-Palearctic migratory bird taxa. Connectivity was strongly associated with geographical proxies of migration costs and was weakly influenced by biological traits and phylogeny, suggesting the evolutionary lability of migratory behaviour. The large intraspecific variability in avian migration strategies, through which most species geographically split into distinct migratory populations, explained why most of them were significantly connected. By unravelling key determinants of migratory connectivity, our study improves..., The dataset reports the strength of migratory connectivity for 83 bird species assessed according to Ambrosini et al. (2019 - J Theor Biol) by filtering > 12 million ringing encounters obtained from the EURING databank https://euring.org) and spanning over more than one century (1900–2019). Other data files are necessary for the analyses or for figures., , # Data from: Eco-evolutionary drivers of avian migratory connectivity ## CONTENTS The file \"Phylogenetic_comparative_analysis_-_Ecol_Lett.R\" is the code to reproduce the results of the paper. The file \"Figure_1.R\" is the code to reproduce Figure 1. The file \"Figure_2.R\" is the code to reproduce Figure 2. The file \"Figure_3.R\" is the code to reproduce Figure 3. The file \"Migratory_connectivity_analysis_-_Ecol_Lett.R\" is the code to simulate the migratory connectivity analysis. The file \"MC_functions_Ecol_Lett.R\" includes functions to run the code in the files \"Migratory connectivity analysis - Ecol Lett.R\". The file \"Dataset.csv\" is semicolon-delimited with a comma decimal. This file and the files \"MRC50_83species.nex\" and \"MRC50_land.nex\" include data to reproduce the results of the paper and both Figure 2 and Figure 3. The file \"Dataset_legend.xlsx\" contains the legend for \"Dataset.csv\". The folder \"Files_for_figure_1.zip\" contains all the files to reproduce Figure 1. Specifi...,