Long term adult body size data

Adult body size records from 1983-2017. Column headings are as follows: band=unique ring Canadian Wildlife Service number identifying individual birds, year=year , sex=male (M) or female (F), age=males are listed as AHY (after hatch year) when caught as adults initially. Females may be aged by plumage as SY (second year, a one-year-old bird) or ASY (after second year, and 2+ years old). Birds caught subsequently are listed based on their age as first capture (e.g. A3Y (after third year), 4Y (four years old), mass=adult’s body mass (g), tarsus=adult’s tarsus length (mm), wingChord=adult’s wing chord (mm), nestID=nest box identifier, not unique, laydate=date the first egg was laid (Julian date), incdate=date the last egg was laid, when incubation begins (julian date), hatchdate=date most of the nestlings hatched (tree swallows typically hatch synchronously) (Julian date), fledgedate=date most of the nestlings fledged or the nest failed (Julian date), dateMeas2=date mass, tarsus, and wing chord measurements were taken (Julian date), year2=years since 1975, when adults were first captured, diff=days between when eggs were first laid and when the bird was measured (dateMeas2-laydate), Period=Was the nest in the incubation stage or the nestling stage?