1-The LG's at the Bird Barn have several different colours
2-Im breeding is done in the wild all the time. With a lot of animals, fish and reptiles, the area that they are bred in is normally close to where they spend their lives so the breeding pool is very small and close
In racing pigeons, there was an experment done where mother was bred to son, then son to their daughter etc. This went on for about 48 generation I think before I gave up on following it. Going from memory, I think at about 12 to 17 generations there were a larger than normal "faults" found but through selective breeding (in the wild these "faults" would not even survive) these problems dissapared.
Most will agree that its great to have hybrid vigour but the better breeding stock is normally pure
With Northo Killis that die out every year, every one has been closely imbred for 1000's of years so there fore 100% related and with no problems.
I cant speak for reps but to me, far too much time is being spent on worring about the limited gene pool we have here