I have a flock of 38- 35 pullets and 3 roos. I am new to this and am building a coop. 20x20 in diameter/metal roof and surrounded by a wire fence/surounded by metal roofing. In our area we have mountian lions (they kill deer) bob cat, hawks, coons, possums and skunks not to mention dogs. We live by a creek which is by the chicken pen (i do not have photos) but the coop is made of heavy plywood 8 foot panels and tin roof. the top 2/3 foot under the roof is double chicken wire. the door is wood with chickenwire/metal at the bottom. The chickens will be outdoor in day and coop at night. I plan on hatching batches always and figure I will have some losses. What kind of losses does anyone expect I will have? How many should I keep hatching to keep a flock of about 50? what IF ANYTHING can be done to prevent preditors? all advice is appreciated. (I am soooo hooked on chickens! ) I have a mixed batch of leghorns/ rir/americanas/red sex link/orffingtons/ and I cant wait to get more! This is too much fun.