I was searching for something and found that this entire book is online. I personally have a copy myself, so I can only recommend it. It covers every aspect of keeping ducks. You learn about breeds, incubation, feeding, and illnesses etc. Enjoy
http://books.google.com/books?id=DDBV8PeRJLMC&lpg=PA110&ots=7g5ode2_dV&dq=%22saxony%20duck%22&pg=PP1#v=onepage&q=%22saxony%20duck%22&f=false
http://books.google.com/books?id=DDBV8PeRJLMC&lpg=PA110&ots=7g5ode2_dV&dq=%22saxony%20duck%22&pg=PP1#v=onepage&q=%22saxony%20duck%22&f=false