We got three full adult bantham hens last fall, and have ordered day-old chicks to arrive in about a month. Everything has gone along fine until today, when we found one hen dead in the enclosed chicken yard, and one dead inside the coop (small chicken door was open to the enclosed chicken yard. We have a fine-guage 4-ft fence around the yard, and poultry netting overhead. I found where the netting had been pulled away from one corner...so something climbed in, killed the chickens, and then left. The chickens weren't eaten except for one had been chomped in the rear, and a half-formed egg was found next to her. What does that and then climbs back out the same hole it climbed in...and in broad daylight? It would have been about 5 pm on a bright, sunny day. Any ideas?