have had chickens now for 3 years. lost 2 one day to a stray dog, lost 5 one day to coyotes, lost another to a hawk. Thats all Ok now, have a good rooster that alerts the hens when there is any danger.( he is better than my two dogs at this ) What I hate most is, since my chickens are free rangers, I leave the coop door open for them while out, lock them in every evening. The birds come in and eat 4 x more chicken feed than the chickens eat in a day. Looking for some type of gadget that can keep the birds from reaching down into the feeder and still allow my chickens access. Any ideas ?