7am our 8 chickens are going crazy outside in the coop/run in our backyard. Rush to get dressed and run out there. They are clacking like they just layed an egg, very loudly. I looked around for a snake, none. I thought maybe my 4 20-week old chicks layed their first egg, nope. They won't stop clacking, for about an hour. My neighbor stopped by later and said she saw a BOB CAT in the yard, circling the coop/run. So what should I do now to prevent Mr. Bob Cat from getting my chickens??