I have 6 Silkie chickens that I have raised inside. They are 3 months old. I do not have anywhere to put them outside and I feel it is to cold for them. I have them in cages with a drop pan underneath that has wood shavings in it. Someone told me that you can get a lung diease from chickens. A fungus that grows in the droppings can make you sick. I do not want to get rid of my chickens but I do not want to get sick either. Can you give me any information concerning this and what I need to do to prevent getting sick.