I have 2 coops on either side of my yard...one with 3 hens and the other with 4 pullets and a cockerel...and then a possum living in the lattice with my wisteria. The other night I saw the possum(it's on the smaller side) on the other side of the fence, peaking over at the pullets. I wanted to do something to get rid of it but my neighbor works at a vet and loves all animals and said there's no way the possum is going to get my chickens. She said it's most likely been living here for some time and has plenty of food to eat so it's not going to all of a sudden get desperate enough to tear through the chicken wire. But now I'm scared to let them free range. I know its living in the wisteria because me dog is going crazy sniffing underneath it every morning. So, the possum is about 10 feet from the one coop and 20 from the other. Should I be worried?? Am I ok to let them free range during the day??