The impact of helping experience on helper life-history and fitness in a cooperatively breeding bird

The data and accompanying .R scripts were used to test whether having
experience as a helper affected a number of different breeding and fitness
related parameters in the Seychelles warbler (Acrocephalus sechellensis)
in the paper "The impact of helping experience on helper life-history
and fitness in a cooperatively breeding bird." 
DatasetsstatusInfo.xlsx: data collected over a focal individual's
lifetime. natalInfo.xlsx: data pertaining to the natal environment of the
focal bird. lastSeen.xlsx: data used to calculate when the bird was last
seen alive. summerIndex.xlsx: data used to determine whether a particular
field period was during a summer or winter season.territoryQuality.xlsx:
data used to determine the territory quality of each territory during a
particular field period. Statistical analyses experiencePrep.R:
the script used to prepare the data and calculate the necessary model
variables prior to running the analyses. experienceAnalyses.R: the script
used to run the analyses and generate the related graphs.  More
detailed information regarding the contents of each dataset can be found
in the READ.ME From this, we found that helping experience had no
significant association with any of the metrics considered, except that
individuals with helping experience had an older age at first dominance,
and dominant females with helping experience had longer lifespans than
those that had never helped. In addition, we found that females with
co-breeding experience produced more adult offspring (≥1 year old) after
acquiring dominance, and had a higher lifetime reproductive success than
females that had never co-bred.