Identifying an appropriate model

[Elise Goldstein]

I would like to compare post - release survival of radiocollared bighorn released on 2 separate occasions. After the 1997 release, bighorns were monitored approximately once every 6 weeks from the air. It seems to me that a CJS model could be used to estimate capture and survival probabilities. After the 2003 release, a full time field tech monitored the herd on a daily basis, and sent in monthly reports summarizing his findings. In each report, each individual was accounted for, so I think a nested known fate model might be appropriate. The results of the 2 models could then be compared. Is this an appropriate approach? Thanks for your help.