Variation in breeding phenology in response to climate change in two passerine species

This paper evaluates how climate change have influenced laying dates of blue- and marsh tits in a population in southern Sweden, from 1983 to 2021. Specifically, we evaluate how daily maximum temperature in an estimated time-window (R package: climwin) and the temperature change in this window influence the duration of breeding season in the two species, i.e. the variation in laying dates within the population. For more info, see README-file.