Is it normal for my male rabbit to eat my female rabbit and his own excrement?

Its totally normal - to an extent. Rabbit have two types of feces - generally the little hard ones and a softer nutrient rich feces - the latter generally being produced at night. Almost ALL rabbits will eat these - often times you won't even see the softer feces. However, if he is eating all of the feces I might consider trying to switch his diet a little, of offer him some vitamins. Often times animals will do this if they aren't getting the right nutrients.