Fox in the Hen House

Saturday morning, while feeding the chickens, I notice we were missing two of our favorite birds.  Puzzled, I searched inside and out and could only find sporadic black and white feathers scattered about.  I ended up  following a trail of them into the woods.  Later I inspected the chicken run again an found a small hole in the fence.  After talking to neighbors we realized it must have been a fox.  That evening, Hannah looked out and saw the fox scurrying into the woods.  This time we let the chickens in at dusk so they were safe in the coop.  Last night, Jamey and Hannah were determined to get the fox.  They selected their stations and perimeters and waited and waited until it was too dark out.  I guess we are not the hunters we need to be yet.  This morning I noticed the log placed in front of the run was moved so I know it returned again for the 3rd night in a row.  We will see who wins this battle...