I'm sorry to hear this Sammy. I lost early on lots of birds and money because of illness. I really could not understand it, and few I talked to often much sympathy other than "it happens." That was not a good response, so I read more abd Fred Jeffries Bantam Health book is a godsend. I just read what I needed and then came up with a motto, if it coughs its dead. That was a brutal year but by August no one coughed. Winter came, no coughing. Looked good and then the next year hatchlings came and some coughed -- gone my lovely! Antibiotics do not really work on poultry they are just bandages.
So having conquered that that I went to the next step, and stopped treating bumble-foot -- I treat only cuts and bruises. I have found that harder to eradicate, and two of my best boys have it so I have breed a lot from them this year so they can fly home. In all cases Tek Trol for cleaning out the waterers and feederers and if you use cages I wash the bottoms with that too --makes a huge difference. Still without the hatchet all is lost just make sure you only kill the coughers. If it doesn't cough, it lives.
Lastly, I've heard bantams are overall a weaker breed; I have a few, very few.
Sue Paolini
Northeast PA