After work my son and I went to go feed our chickens. Right away I noticed a half outside the coop and the others still inside. The hanging water bowl had its bottom on the ground after filling it up the previous evening which was bizarre. Well, we began to round them up and I started counting - one missing. Queue investigation. Looking around, no blood but tons of feathers... from all my chickens. Mostly inside the pen, outside I found several feathers that look like they belong to the orpington. The coop is sheltered but the entire pen is open on the top, one placed where the gate is I seen a dip in the fencing but... No tracks, anywhere. Frustrated I begin to walk around my yard and neighboring yards to see if I can find her. Nothing, nada, zilch. Finish watering and feeding the remaining chickens, talk to the old lady about the issue. She states to look for a trail of feathers so I go back outside to check. I start by the gate and find a few. In the area I notice a few feathers that seem to form a path and followed it. This lead me to some brush on the northside of the property where just barely 12 inches into it I found a couple more feathers sort of in a circle then nothing. No blood at all, no tracks. It is all dirt up to the brush as I dont like to mess with mowing that part of the yard due to it being extremely hard to get a mower down there to it. I can still see the rain drop prints from the rain a few days back and the ground was still soft which pushed me to really search for tracks but nothing. What happened? Remaining chickens are really quiet this evening as well, not moving a whole lot so I am thinking they are extremely tired from today or scared.