This morning when I went to open the coop for my six 5 week old chicks, there was a big snake in the run. Luckily it hadn't been able to get into the coop itself. I though we had a pretty safe run, with hardware cloth on the bottom 30in and then chicken wire all over it, including the top. I am very careful never leaving food in the run at night, so as to not attract mice. What did we do wrong? Could the snake have climbed over the hardware cloth and then passed through the chicken wire? This is my guess, as when I found the snake it had its head stuck through the hardware cloth, trying to get out of the run!!! Do I need to put hardware cloth all around the run? thanks!!