Yes!
Sina has successfully proven that FlowerChild Byrds is dominant to Odyssey Bellini!
Straightforward proof: Rowena (showing Ody Bellini) was mated with an 8th Birthday cat; the daughter Chilli shows the FlowerChild Byrds which must have come from the starter. When Chilli is mated with a cat showing Galaxy Star, it pulls what must be Chili's hidden, the Ody Bellini.
Therefore, FlowerChild Byrds must have hidden the Odyssey Bellini and be dominant to it.
Quick edit to add: Sina that is one Heck of a great first post!. Welcome to the forum.