I am near a large stream, and I do know that there is a fisher cat around here, I've set a live trap with a piece of chicken as bait so I hope to catch it soon, I'll tell you guys what it is when I catch it and I'll try to post a picture of it as-well, thanks for all your help.
I'm not sure what time the second one was killed, I think during the day, and i'm pretty sure the first was attacked during in the morning, there may be a way in on top through where the tarp and netting meet but i don't think there are any signs of tearing in the tarp, i haven't really checked...
I live in southern Maine but there's still pretty heavily forested, we haven't let them free roam in a while and they are in a run with pretty tall walls with a plastic netting sort of thing over most of the top, with a tarp over the rest, the fence goes into the ground about 6 inches... a while...
One day I checked the chickens and one had a pretty nasty wound in its back and after a while it eventually died. And then the next day another one died, there where lots of feathers outside the run, the same happened with the first chicken, but this time the head was gone and it's meat was...