________________________________________________________________________________________________ Title: Breeding in the pandemic: short-term lockdown restrictions in a European capital city did not alter the life-history traits of two urban adapters Authors: Michela Corsini*, Zuzanna Jagiello, Michał Walesiak, Michał Redlisiak, Ignacy Stadnicki, Ewa Mierzejewska & Marta Szulkin Corresponding author: Michela Corsini (e-mail: michela.corsini.fau@gmail.com) _DATA DESCRIPTION________________________________________________________________________________________ The file entitled "Occupdata" contains all great tit and blue tit data used to perform occupancy rate analyses: Database legend: Year: (4 levels) 2017, 2018, 2019 or 2020. Site: (7 levels) PAL= suburban village, KPN = Natural forest,MUR = Residential area I, OLO= Residential area II, LOL= Urban woodland, UNI = Office area, POL= Urban park. NestboxID: single nestbox id number. Lockdown: (2 levels) Open: Lockdown Entrance Allowed (LEA) sites, Closed: Lockdown entrance not allowed (LENA) sites. OccBT: 1 if occupied by Blue tits, 0 if not occupied OR occupied by other species. OccGT:1 if occupied by Great tits, 0 if not occupied OR occupied by other species. TreeCov: Averaged percentage of tree cover estimated in a 100m radius around each nestbox. LayDate: date of first egg laid (1st of April of each year noted as 1). _____________________________________________________________________________________________ The csv-files entitled "DataGTf1720S" and "DataBTf1720S" contain all data used to analyze great tit and blue tit, respectively. Life-history and fitness data here reported included: lay date, clutch size and incubation duration. legend: Year:(4 levels) 2017, 2018, 2019 or 2020. Site:(7 levels) PAL= suburban village, KPN = Natural forest,MUR = Residential area I, OLO= Residential area II, LOL= Urban woodland, UNI = Office area, POL= Urban park. NestboxID:single nestbox id number. unique_breeding_event: unique breeding event id. Lockdown(2 levels): LEA (Lockdown Entrance Allowed), LENA (Lockdown Entrance Not Allowed). OccBT: 1 if occupied by blue tits, 0 if not occupied or occupied by other species. OccGT: 1 if occupied by great tits, 0 if not occupied or occupied by other species. Species:(2 levels) GT= great tit, BT = blue tit. LayDate: date of first egg laid (1st of April of each year noted as 1). CS: Clutch size. Inc: Incubation duration (in days). TreeCover: averaged percentage of tree cover estimated in a 100m radius around each nestbox. __________________________________________________