Magic Forest is dominant to FlowerChild Byrds.
This started out as a test of Magic Forest versus Ody Sublime. When I started this test I did not know what eye, Duvessa, the Magic Forest cat hid.
MagicForest>FlowerChildByrds
So here we see the FC Byrds coming out from under the Ody Sublime (pulled by Soul Whisper). Now we already know that Ody Sublime is dominant to the FlowerChild Byrds - that's not interesting. But you do have to ask, where did that FC Byrds come from? So you look over at Corvay's parents... and it is very tempting to to automatically say "well obviously Erling threw the Ody Sublime and the FC Byrds had to come out from under the Magic Forest. But because we do not Have a proof of Sublime versus Magic Forest, we can't make any assumptions.
But we can see Erling's pedigree here:
ErlingSublimePedi
So we know the FCByrds didn't come from there. It had to have come from Duvessa, showing Magic Forest.
Therefore, Magic Forest is dominant to FlowerChild Byrds.