Two nights ago we moved the chicken ark to a new pasture. We lsot one hen moving the ark as they all got out and one Araucana hen went into the woods and we were not able to catch it again. That night we left all the chickens locked up but the door open as we have an electric fence and had not lost any chickens to predators since we got it. I quess we were wrong. The next day my husband went out to our farm (We are leasing it so it's not on our property) and there were 5 dead chickens. 1 Barred Rock was totally missing. The only reason we know it was gone are some fathers that got caught in some pasture grass. 4 naked necks were just bitten (on the neck) and left there. The bites are small. They are not torn apart, just bitten and dead. 2 Amaraucana pullets were bitten around the neck.back and left there and one leghorn pullet's head was bitten off and the rest of the body was left there. The ELECTRIC FENCE was on the whole time and one panel was on it's side a bit, swaying but now down on the ground. Whatever it was went through/Over the fence. Then last night we left the coop closed. Now 4 dead Cornish crosses and 15 dead variuos chickens. What is getting them??? We have an electric fence but not any netting against birds and what birds is getting in at night? It's a VERY wooded area in Washington state next to a state park so it could be anything, martens, raccoons, weasels, foxes, any ideas? What would discourage them?