Climate warming and land-use change are reshuffling the distribution of wild organisms on a
global scale. Some species may expand their ranges and colonize new regions, which may
greatly affect ecological interactions among pre-existing species and colonizers. In the last
decades, such processes have originated a unique condition of sympatry among three
Eurasian small Falco species (common kestrel F. tinnunculus, lesser kestrel F. naumanni,
red-footed falcon F. vespertinus) in the intensively cultivated farmland habitats of the Po …