I had this beautiful silver guinea that refused to sleep in the chicken house. All the rest of the guineas sleep in there but she would not go in!! When I went to let the chickens out this morning she wasn't waiting at the door like usual and sure enough one of the dogs found a large pile of silver feathers. Whatever it was that got her didn't leave anything behind but a pile of feathers. I knew it was only a matter of time...we have way too many predators here for her to last very long outside at night. I hate that we lost her but I knew it was coming. At least the other 7 roost inside at night so they should be OK.