We will have three age groups. The first age group will not be able to reproduce (modeling infants). The two older age groups can. Males of age two have twice the chance of mating than males of age three. Females of age two can have many offspring in a cycle, whereas females of age three can only have one. Males of age one have 80 percent chance of surviving to age two and again 80 percent chance of surviving to age three. For females, the value is 90 percent for both.
Read the first recipe (Introducing forward-time simulations), as it introduces the basic programming framework. If you are using the Notebook files, this content is in Chapter05/Complex.ipynb.
