I've got 6 week and a half old Pekins in one brooder. I just put 10 Welsummers in another this morning. Tomorrow or Friday I should get 5 more runner ducks and a pair of geese. I use 2.5'x3' rabbit cages for brooders. Am I going to need to pick up a couple more brooder cages and lights? Or can I combine anything? I'm wondering if the new ducks and geese can go in with the older ones, but the older ones are pretty big. And then there are the geese, do they need to be kept separated from the ducks because of their size?