I live in a warm climate, however it does dip into the low 30s at night a few days a year. My coop has lots of windows covered in chicken wire, since my biggest problem is the coop getting too hot in the summer. However, I wanted to cover most of the open windows this winter to help keep the chickens warm (this is my first winter with chickens). I cut pieces of blue foam insulation to fit in the window frames. It works great, however the last few weeks, my 12 wk old RIR have taken to pecking at and eating the blue foam. I've removed a few pieces that were in easy reach, but now they have gotten crafty and try to fly up to perch on the hard to reach windows so they can eat the foam. They are outside all day, but they still spend quite a bit of time trying to eat the foam (they seem to prefer that to grass and scratch!). Besides getting rid of all the insulation, does anyone have a suggestion of how to get them to stop? Also, they don't seem to be getting sick from it, it seems to just pass through the gut and out in their poop, but I'm a little worried that if they continue at it ,it may have long term consequences - any ideas?