There, they trickle from the roof to their lofts inside the barn.It never ceases to amaze me that they can find their way home, McSweeney said.No one knows exactly how the pigeons, known as homing racers, find their way from points in Mississippi, Alabama, Georgia or other places back to their cozy loft tucked among the south Louisiana bayous.That???s still a mystery, McSweeney said.Scientists