No one knows for sure but if they are a hybrid then my monesy on synspilium x midas/devil although I dont think you would just breed them together and get BP's.Theres probably all sorts of back crossing and line breeding to produce them.I have bred what are esentially BP's by breeding my male synspilium to a king kong parrot, out of about 30 I got 6 that are parrot shaped/coloured.