As I mentioned in my previous articles on the bl-locus, there are breeders that have (most probably) the real turquoise mutation in Agapornis fischeri (for a good order sake not the combination of blue1 and blue2 or a sapphire). Problem (as usual) was that we needed more test mating and proves before we could drawn substantiated conclusions. (You all know our policy). Now we believe we can confirm it is most probably a true turquoise.
What is the difference with a Sapphire bird? Sapphire is a blue bird with a few green spots (mainly on the underpart of the body) and an orange forehead and white mask.
These turquoise birds have a pink/yellow shade on the entire mask. The wings are more greenish and a blueish body (it looks 100% similar the with the genuine turquoise Agapornis roseicollis).
Here a few pictures:
Here a combination with dominant pied, see the psittacin remains in the feathers