By any chance was she tube fed by the breeder? I've had amazons go through a very frustrating phase of not having much of a feeding response. We got through it with multiple smaller meals. All of their issues disappeared a few weeks after they learned to fly. The only time I've heard of a macaw with a poor feeding response was when the breeder tube fed. The way I handled lack of a feeding response is I did a bunch of google searching to figure out the average age that amazons hit their peak weight. Which seemed to be about 45 or so days old for my species. I did multiple smaller meals to make sure they got what I estimated was a decent amount of food. The equivalent of 3 or 4 feedings of about 10% of their body weight. If it took me 4 feedings to get 110-150cc into them for the day, then so be it. And I assumed if it was a struggle to get them to eat the lower end, then they were probably just fat because I was such a good mom. Whatever I could get into them. After I was confident they had grown as much as they were supposed to grow, I dropped it down to offering food 3-4 times a day but not pushing it. If they didn't seem interested, I'd be happy with 10cc so I know their blood sugar wouldn't crash. Its typical for them to loose weight during that time anyway, so I just made sure they got enough food to support themselves, even if they did loose weight. During this time, I did have food always available in their tub though. If they didn't want formula, then they could practice pulverizing some pellets into dust or smearing sweet potato all over the place.
After a couple weeks of loosing weight, they started flying. Still not really wanting food because flying is OMG so exciting for babies. But, within about a week or two of flying they hit a phase where suddenly, they are starving hungry and will slug down formula with a very strong feeding response. They might not do that at every feeding, but I could usually count on a decent feeding response for at least 20-30cc for a 500g amazon in the morning and then usually a quick partial feed in the afternoon and by bedtime, they'd take 40-60cc which I consider a normal feeding for a bird their size. You would probably double my numbers for a blue and gold sized bird. Don't try to get the baby to come to you for hand feeding. That will work itself out. There will come a day soon where you can't get away from that bird. It will fly back and forth across your house and land on you. If its feeding time and they see you with formula, they will come to you. You'll know it when you see it. If you aren't seeing that behavior, its because your bird is just a baby. Trust me, from parrotlet, to amazon to handling a regressed macaw, the bird will eventually fly to you. Its up to you to keep that behavior as the bird matures. Honestly, they become a pain in the butt about waning to hang off their human. A 1000g blue and gold may very well get down to 850g before it suddenly wants to eat well. Don't let her weight crash, but she may loose a surprising amount. And this is normal and good. Trying to stop it from happening will only make weaning way harder. She should at this point have some adult food in front of her most of the time. Offer cooked or fresh food a couple times a day. All other times, pellets to crush. She will waste like 99.9% of it right now and for the next several weeks. But she needs to learn about food and that swallowing grown up food makes hungry feelings go away. You can't really teach her that. Just provide her with continuous opportunities to learn herself. If she isn't interested in hand-feeding, give her a partial feed, but her back in her cage with some warm veggie mash and walk away from her. MANY babies will eat some on their own after getting a small hand feeding. Don't expect your baby to start doing that for a while, but make sure the opportunity is there for it to happen every day.
