It has been awhile since I have posted and quite a few things have changed. After my presentation on Friday I got some good feedback on what to change/add. I am coding a new model where I still have three stage classes but now the Young Adults (the middle class) will no longer reproduce; they represent a dispersing group of mice. I will now be calling them the Weaned (W) stage class. So now I have Juvenile, Weaned, and Adult. I have also added two new stage classes that represent Adult females that are lactating or are pregnant (they cannot reproduce so they are separate from the Adult class)

I am also reading about logistic models and using them to incorporate a density dependent death rate.