hi, I have two batches (two weeks apart) of silkies currently in the same brooder with a divider down the middle. In the two week old batch, I started with 12 and ended up with 3. Of the three, the chick is almost the size of a day old chick. She eats and seems normal, but she cries a lot unless I hold her. Also, one of the bigger chicks is sneezing and has gunk coming out of her nose, but she eats like a pig and runs around. In my second batch of 20, I woke up yesterday to a dead chick. I expected one or two to die, but that’s it. This morning, I had 3 chicks die in a matter of 10 minutes. The others seem strong and healthy, but so did the other 3. I’m completely lost. The temperatures are right, there’s always food and water in the brooder, and it’s draft free. I have been using nutri drench, vitamin waters, and cooking eggs for both batches. What else can I do?