# weight_g: chick weight in grams # day: day of measurement (Day 0 = day on which the first chick in the nest-of-rearing hatched) # year: year of measurement (2010 or 2011) # day.cont: day of measurement (as numeric, not factor) # day.hatch: hatching interval in days (0, 1, 2-3) # fhatch: date (days since first of April) on which the first chick in the nest-of-rearing hatched: mean centred (mean=45.27) # clutchsize: clutch size of the nest-of-rearing: mean centred (mean=9.941905) # sex: gender of offspring (M or F) # time: time of day measurements taken (in days 0=midnight, 0.5=midday): mean centred (mean=0.4540711) # bird_id: bird identity # nest_rear: nest-of-rearing # nest_orig: nest-of-origin # treatment: C=control 1L=first to late, 11=first to first, L1 = late to first and LL = late to late # eggm: was the egg weighed or not (2010 eggs were not weighed, nearly all 2010 eggs were) # aveggsize: average egg weight (in grams) of eggs from the same nest-of-origin as the chick: (mean centered at 1.189589, missing egg weights = 0) # daveggsize: the deviation from aveggsize (in grams) of the average egg weight of eggs from the same nest-of-origin that hatched in the same nest-of-rearing in the same hatching interval # fmother: foster mother identity # mother: biological mother identity