If the Quetzal Coalescence Template Library is a mother toolbox, Quetzal-EGGS are her little programmatic children. Quetzal-EGGS is simply a suit of small simulation programs built on the Quetzal library - much easier to understand and use.
Each program is an implementation of an original spatially explicit coalescence model. That is, every Quetzal-EGG will be slightly different than their brothers, varying by the migration model, environmental reaction norms, or demographic model assumptions.
Each underlying model is carefully detailed along with the program documentation to help the user choosing the right Quetzal-EGG for their biological question.