I have raised various chickens for some years now and have found that keeping a radio on at night in the coop helps keep predators away. I was told a story about a friend who had raised chickens for years and always had a radio on at night to keep predators away. He never had a problem until one night his wife turned off the radio. The next day every one of his chickens was gone. I raise meat birds for fair and have them in an old coveret that i turned into a coop. The whole thing, top to bottom, is double chicken wired and the door in hardware clothed. The good thing is when it gets hot i can raise the sides up and help airflow, the birds love it. Its often too hot at night to close the barn so i just leave it open!! Ive kept the radio playing at night and ive never had a problem. Even though the coop is pretty secure a weasle would have no problem getting in, so i guess the radio helps!! Just thought id let everyone know in case you were having a predator problem!!