One week ago I bought 4 silkie chicks and 4 standard size chicks from a local farm store that orders them from a hatchery. I have them all set up in a plastic bin with plenty of room, heat lamp, feeder and waterer. I worked this past weekend and then was sick Monday so my husband has been the main one taking care of them since then. Today while on a lunch break from my college class I called him and he told me that 2 of the silkies were dead in the brooder and that another one was having trouble walking. Of course I started freaking out! He also said that the one that couldn't walk had pasty butt so he was cleaning it off. He said that one of the silkies had pasty butt pretty bad but can't remember if the other one did or not (men...smh). When I got home I inspected all of the chicks and 3 other ones had pasty butt but not bad, I went ahead and cleaned all of them off. We are using a different feed that we have never used it is called Tucker Milling. I'm assuming that is what is causing it. But that doesn't explain what is wrong with the chick that can't walk. It will walk some but it stumbles and then falls down, and once it falls it spreads its wings out. I have been helping it get to the waterer which I put the sav-a-chick probiotic and electrolytes in. Any idea on what it could be? We have had chickens in the past that were free ranging in our yard have weird symptoms such as seizures and not being able to walk and wing drooping then eventually they would die. But that was a year ago and all of our full grown chickens are fine. And these chicks aren't outside.