Hi @nchls school, here's an update on Rosie's wing. She lost even more feathers just a few weeks ago, her wing looked like a stump with hardly any feathers. I was not very successful with getting them to eat better, they're so stubborn. I would take their seed away and they would go days without eating, and refuse to eat vegetables and fruit. It's also hard because it spoils so quickly.
A few weeks ago I got three cockatiel mixes; one with orange essence, one for molting and conditioning, and one with fruit, nuts, and grass in it. I mixed those 3 together and I've been giving them that, and some multi drops in their water. I leave the same food in their cage for a couple of days and I only give them some more when the fruit and seed pieces are gone. They've actually been eating it, I'm surprised. Rosie is getting her feathers back and her wing looks better than it has ever been! Hopefully she gets them all back in a few more weeks.
Yes, hook bills are stubborn when it comes to changing their diet; it takes time and patience.
I am glad to hear that Rosie's wing is getting better.