What you need to do is bury some chicken wire and attach it to your run so that even persisten animals can't get in. This helps in keeping your yard in best shape and also allows your birds to eat fresh food which is lot healthier for them. Take time ***ore you start to pick the right location and your life - and your chickens' lives - will be much easier.
Now, this is not something that is going to do any damage to your health if you do have it, but, it is a real pain, because you have that constant ringing in your ears that can at times almost drive you crazy. All you need to do is take some warm garlic oil and put three drops of it in the ears ***ore going to sleep. The Etymotic Research ER6i Isolator In-Ear Earphones (around $110 on Amazon) put you in your own world.