It's perfectly normal, I was intending to start with 2, then brought a hen house big enough for 14 just in case, and I'm currently on 9! Intending to add a couple of bantams and ducks in the spring! Unfortunately I'm the same with cats and dogs too, started with one dog and 2 cats, now have 3 dogs and 4 cats and a horse!! Won't be adding anymore though, OH said he will leave home......................now there's a thought