Take the 2-age class Serin example just considered under "known age releases" .
Eliminate the adults the data set (hint: you can use the 'subset' command in R to easily do this!)
Construct a cohort-based analysis for the young only data using RMark.
Run a series of models including age-only, time only, and age with time. For the last run both additive and interactive models
Repeat the analysis in the MARK GUI
Compare your estimates of age and time-specific survival to those produced by the 2-age, known age release analysis
CP&PPS*
*Conroy's proposed and probably partial solution