Well, it seems in the dog world while there are a lot of mix up in the breeds, the purebreds seem to just gain value in the eyes of people. Seeing as there are breeders against hybrids it doesn't seem a risk to the population. Is there a reason why the bird world wouldn't follow suit?
By the way, with hybrids I am thinking more hybrids of birds of similar species: amazons with amazons, macaws with macaws, etc. I don't know much about bird genetics but it seems that cross-species hybrids wouldn't be possible? Because they are really different, vs. dogs that are all dogs. Does that make sense? You can cross a dachshund with a chihuahua because both are dogs, but you couldn't cross a macaw with cockatoo because they aren't even in the same family? I could be totally wrong here, because like I said I don't know bird genetics, but I sure haven't heard of any!
oh and thanks for the compliment on the avatar!