cs_initiation_date

This file contains data used to estimate the effects of clutch and brood size manipulations on clutch size and initiation date of female black brant in year t+1. Variable descriptions are as follows: "METAL" is the unique number on a female's steel leg band; "CSM1" is the laid clutch size of a female in year t -1; "CS" is the laid clutch size of a female in year t. "IDM1" is the initiation date, in Julian days, of the female's nest in year t - 1; "ID" is the initiation date, in Julian days, of a female's nest in year t; "MCSM1" is the manipulated clutch size of a female in year t - 1, this variable was z-standardized with mean = 0 and sd =1 to enable replacement of missing values with 0; "GLNM1" is the manipulated initial brood size of the female in year t - 1; "YEAR" represents breeding season t; "RELID" is the relative initiation date (Julian initiation date - median initiation date) of a female's nest in year t; "RELIDM1" is the relative initiation date of a female's nest in year t - 1.