I think we're some way off the BOU making such a decision (although UK400 does lump Scottish with Parrot). It really all comes down to how you define a species; what level of importance you attach to different vocal groups, etc. If you read The Sound Approach book, you're left considering that we've either got 1 species, or about 8, or somewhere in between. It would certainly make life easier if they'd lump the lot, but I suspect we'll be stuck trying to tell Scottish from Parrots from "Common-types" for a few years to come yet.
Andy
