Does hatch date set the clock? Timing of post-fledging movements for families of a colonially breeding, long-distance migratory songbird

Cal: tag ID: the ID of each Motus tag date: the date of mounting tags on birds sex: undefined for juveniles and cavity : the number of each nest cavity hatch date: the date of hatching eggs at each nest cavity first egg date: the date of the first egg of each cavity Age: age of birds at the time of mounting tags Fledge date: the date of fledging of juveniles of each cavity dcdoy: the date of colony departure date in number of days of a year of juveniles of each cavity nesting period: duration of nesting period of juveniles age at fledge date: age of bird at fledge date age at colony departure date: age of bird at colony departure date datan: date: the date of mounting tags on birds mfgID: Motus tag number tagID: the ID of each Motus tag age1: 1 indicates adult and 2 indicates juveniles sex: undefined for juveniles and F indicates female and M indicates males cavity ID: the number of each nest cavity age: HY indicates for juveniles and ASY indicates after the second year and SY indicates the second year nestlings: number of nestlings in a cavity first egg date: the date of the first egg of each cavity location: location of breeding colonies of purple martins ageA: age of birds at the time of mounting tags age at fledge date: age of bird at fledge date site: giving numbers as codes to different sites Fledge date: the date of fledging of juveniles of each cavity Colony departure: the date of juveniles departed their colony weight: the weight of juveniles at the time of mounting tags on them tarsus: the length of the tarsus of juveniles at the time of mounting tags on them wing: the wing length of juveniles at the time of mounting tags on them fat: the score of fat of juveniles at the time of mounting tags on them year: different years of study