We have a henhouse/outdoor run that are pretty secure from any kind of predator, but we let the hens out into a larger run during the day with access to their coop. I thought our hens were pecking their eggs until I caught a scrub jay inside the hen house. Usually what we find is one pecked egg a day, generally with a fairly small hole and most of the egg still inside. At one point we had chicks in a small pen just inside the hen house door, and the little corridor that made just inside the door seemed to deter the jays for a while, but now they're back. The fake flying owl that we posted outside the coop didn't seem to make any difference at all. Does anyone have suggestions?