I'm not sure any more if I've got chickens or a special kind of feathered locusts. For about 3 months I've had my chickens free ranging in our back garden. I sometimes wondered why there were pieces of styrofoam lying around but thought they just dug up some old stuff from the ground. Then, one morning I heard a strange rasping noise. When I checked, I saw my flock lined up against the wall of our house like people sitting in a bar. They were chomping away at the wall! That is, they were pulling out the insulation stuff and eating it. Even the baby chicks! They must have beem doing that for some time already, there is quite a bit missing. In order to save our house and the health of my chickens I locked them in their run for 2 days now. (They had been in that run all winter just fine). Today I saw that the roof of part of the coop was all white and shiny... they had pecked away the outer layer in order to reach the styrofoam underneath. In winter they never did anything like that. They had also damaged part of a wall and caved out the styrofoam there. They seem to be addicted to it. No interest in layers feed, just "styrofoam", stuffing their faces with it as if it was the most delicious thing on earth! Is there any way to stop this or do I just have to break down the coop and rebuild it with "inedible" materials? ( What if they take a liking to concrete next?? Only half joking)...