If it is what you say why do you think it only effects a % Of birds ,what about the ones that make it home Week in week out are they just lucky .i believe there Is more to it than that ( .question )did the big losses begin When the wind farms went up or the explosion of BOPS Came ,or the use of metal crates as apposed to wicker Baskets ,or what the MOD are up to ,or just modern tec I certainly can't answer that ?