Sorry you lost a chick. As you thought, it could have been too warm and humid. I don't have any clear answer, but I too lost two about a week apart at this age of the 23 I had. I didn't want it to spread to the others so I cleaned the litter, put electrolytes in the water and made sure the temp...
I have a brood that is almost 3 weeks old and I've had two sudden declines and that resulted in death. The first I found last week and it was weak and listless and it died a few hours later. I'd tried to nurse it with some Save a Chick Electrolytes.
The second death happened yesterday when I...