I have two 7 week old americanas doing the same exact thing I've been pushing water and keeping warm and in a quite place not really pooping cause there not eatting any other suggestions for this would help so far everyone else is fine
It could be sour crop or crop bound. You need to take their food out at night and then check them first thing in the morning before they have a chance to eat something. Crop should be small or empty. If it's still as large as the night before, it is either sour crop or crop bound. There are very many topics on both here. I would do a search to look for discussions on how to treat it. If its crop bound, sometimes there isn't anything you can do, but surgery.
Are your young birds on grass or hay? Do they have access to chick grit? If they have access to grass or hay, I would remove them from that. Especially hay. If they have no grit available, get some. Not enough feeders and raising them on hay, or maybe even straw, usually results in a bird or two getting crop bound. Reason being, they are low on the totem pole and get chased from the feeders so they eat the trash in the yard. Or even boredom could cause them to eat stuff they shouldn't. Hay or long grass will ball up in the crop and cause them to become crop bound and starve to death. Very hard to resolve crop bound birds. It's best to take measures to avoid it. Use large pine shavings, extra feeding stations and have grit available.