I have had chickens for 2 years and their run has been around an old (30-40 year) beautiful pink flowering crabapple tree. I asked a few people in the very beginning if it was safe for the tree to have 6 chickens scratching, dustbathing, and pooping in the dirts above the roots and everyone assured me it would be fine - even good for the tree because the chickens would eat buys, fertilize the ground, etc. Well, after 2 years, I thik I am seeing signs of distress from my beloved tree - it has pale and brown/yellow leaves scrattered throughout its branches - and I'm worrying. My yard is tiny so its not easy to re-structure the run to not be above the tree roots - but if I do try - how far away from the tree is "safe"? I assume the roots spread out at least as far as the branches - and that is a lot. Also, if I move the run, is there anything I can do to give the tree extra help in recovering from possible damage from the chickens? They have dug a little around the roots on one side - and I can put topsoil back, add something to counteract the acidity of the chicken poop, add some tree fertilizer - what else can/should I do. I love this tree and it would be a huge loss if it continued to get sicker and sicker. Any advice would be very appreciated!!