What predator did was not an indication of smarts. It was an indication predator had time to do its killing, the killed had little or no cover / protection, and predator was not obstructed by fencing or other dogs from getting from getting to different kill sites. It is also an indication that either you are directly aware of where predator called or have good communication with other fowl keepers.Thx for all the advice there has been coyote sightings recently in the near area what ever it was was smart i know at my coop in particular by the tracks the animal came in my yard through a ditch that allows water to flow of my property allowint it not to be seen. Then it stocked around my yard serveral times finally finding a weakness in the wire where it made its way in. My first thought was a dog but would they be that smart?