My husband and I started our coop a couple of days ago. We still need to put up walls but the frame is built. Today I read several posts on chicks being killed by raccoons. I have already had them on my mind and was trying to build the coop with them in mind (did the same for the run too.) I have two concerns. One in an effort to save money we used a sturdy plastic type chicken "wire" fence for the run. Should I replace that. The chick(en)s won't be in the run past 8 at night. The second, we also used this plastic stuff at the top of the coop for ventilation. Will a raccoon climb up there and try to get in? Other considerations: we have a sturdy door we will use to access the coop and we will make the door from the coop to the run sturdy and lockable as well. Finally, I live in the city and haven't seen any raccoons ever (in the city). We are surrounded by dogs which I have heard frightens raccoons. Please give me any and all advice to keep my chicks safe. Thanks.