If you are feeding chicks Naturwise Feather Fixer that has too much calcium. Please feed your chicks Chick Starter or Flock Raiser.
Feather Fixer has min. 3.25% calcium and max. 3.75%. https://www.nutrenaworld.com/product/naturewise-feather-fixer-poultry-feed
Read the feeding instructions on...
Do you have a photo of the feather fixer bag?
The chick in the photo looks like it has some swelling around the eyes. The sunken eyes with looking wet, she may be suffering from respiratory infection like Mycoplasma, but an eye infection from something else is a possibility. Taking her to the...
Are the chicks eating layer feed? If they are, then I would use an all flock/flock raiser type feed for everyone.
It makes it much easier instead of buying separate feeds and worrying about chicks eat layer feed.
Do you have any more that are bloated?
You mention you are doing the Drench, but you also have mixed Corid water for them to drink too right?
The Drench is in addition to drinking the water for 5-7 days.
It would be good to check their vents several times a day to see if they are getting...