Hi, I just acquired 6 Gold- and Silver- laced Wyandottes from a neighbor who ordered them from McMurray's. They arrived yesterday morning. Last night I was having trouble regulating the temp in my brooder, but seems to be a steady 96 degrees now. One chick out of the 6 is laying down, hardly moving. I gave her some sugar water and she drank it, but she doesn't seem to be doing any better this morning. One thing I've noticed is a very loud and strange 'crackling' sort of noise coming from her back end. I'm feeding them non-medicated chick starter, and I've been religiously changing the paper towel bedding in the brooder, and also keeping the water clean and fresh. Any ideas? The noise is scaring me...if she's got mushy chick she's probably very very sick...what do I do at this point? Wait? If I have to cull, how do you do it at 3 days old? Thank you!