Lots of logic in what Bob states,the density of the Perigrine,and to a somewhat lesser extent,other Raptors is solely down to its artifical food chain,our pigeons,available as protein packets.on a yearly basis,but especially available in greater numbers,when needed most,their breeding season,resulting in most pairs producing full nests,and reared to maturity,with very little effort on the parents behalf,now each fancier,at this stage,take a bow,because its down to your generosity in providing these raptors with food thats resulted in their population even by the doctored figures of the R.S.P.B to be now at an all time high and guess what,its gonna be at least 50% worse next season,under no circumstances can R S P B or any of the other bodies take credit,for this,its down to us fanciers,and our blindness,that credit should be given,would Bobs policy work ,of couse it would,Nature would decree that,as it always has,will it ever be implemented,of couse not,because the pigeon fancier is the cuurent dinasour.