I have lost two of my beautiful mixed breed bantams. All that is left behind are a handful of feathers. The attacks are accuring during the day around noon to 3pm. They are kept in their coop at night. My chickens are making no alarm noises. Just the usual clucks when one of our cats runs by them. That's normal. Not the O MY GOODNES SOMETHING'S GOING TO GET ME!!!! sounds. Believe me I have a roo that could split your ear drums with his. They were my lightest hens. Kind of a ghostly blue/gray color, my most beautiful by the way. They were barely a pound apiece. I have lost no more for a while. Could it possibly be a hawk? What could catch a chicken so quickly and make so little noise? Sorry no pics I hadn't had them long enough to get any.