Lifetime Fitness Variation Across the Geographical Range in a Colour Polymorphic Species

Datasets used for the study "Lifetime Fitness Variation Across the Geographical Range in a Colour Polymorphic Species", in which we investigate life-history traits among different tawny owl populations in Europe. The breeding life span (BLS), lifetime egg production (LEP), lifetime reproductive success (LRS) and the number of years skipped between breeding attempts (NYS) differed between populations, with LEP and LRS varying across colour morphs within populations.