Fixing detection at 100% for colext

[cscjsm...@gmail.com]

Dear Unmarked community,

    First off, thanks for making such an awesome package that makes it easy for field ecologists to get meaningful answers to our questions.

       I am trying to analyze an occupancy 4 year dataset on Daurian Pika from Mongolia (a species with few published studies) with data from 2019, 2021, 2022, and 2025. We measure occupancy by checking every burrow entrance within a plot for fresh green scat, and have estimated detection probability around 100%. My main question is:

Using function colext, is there a way to fix detection probability at 1, and does this interfere with estimation of other parameters?

Secondary Question: From reading other posts on missing years in dynamic occupancy models, it looks like I can fit these open models with covariates and get good results for them, but the interpretation of the rates (say of extinction and colonization) are messy. Is this close to the correct interpretation?

Thanks, 

Chris