Data: determinants of laying date at the population level

Data used for the analysis of the determinants of laying date at the population level, where each line represented a farm within a year. Columns included year (YEAR), farm identity (FARM), mean laying date (MEAN.LD), (DENSITY; % of occupied nest boxes), distance to St-Laurent River (FSL; kilometers); longitude and latitude (LONG, LAT; decimal degrees), altitude (ALT; meters), rainfall (PREC; milimeters) and temperature (TEMP; Celcius degrees).