I recently purchased two blue & gold Macaws. I'm keeping them in separate cages. I am using iron wood for the perches inside the cages and I would like to know what types of perch wood I can use at the top of their cages that is safe for them and that they can chew on without any health related problems. I visited Home Depot and they sell one and one half inch wooden dowels, however there is a small sticker labeled "P65 Warning". This basically says that the wood contains harmful chemicals! With that said can anyone recommend a safe perch wood that they can chew on without affecting their health? Also, where can I buy safe wooden perches? Thank you.