I had a 3 week old silver sebright suddenly die on me. It was the liveliest of the bunch and the next morning was flat out dead! This happened on Wednesday (5/4) or late on Tuesday night. He was fine when I did my nightly rounds. I highly doubted he was sick. I'm still highly confident one of my serama roosters chased him around the brooder and he (being very flighty) injured himself. For some reason my oldest serama cockeral decided he didn't like my sebright chick and was picking on him. And since this incident I've noticed all of my seramas fighting amongst each other and distressing the other chicks in the brooder. I think it is time for me to move the seramas! They are about 5/6 weeks old. Is that old enough for me to remove them from a heat lamp since they're so small? I'm so scared to hurt them! Now yesterday I noticed a phoenix chick seemed a little "light". I've had a number of pets over the years and I know that feeling. He was still moving around and doing his thing though. Tonight my husband surprised me with a silkie chick and after crawling out of bed sick I went out to see the chick and check up on the others and the chick was even more lethargic and I could tell by feeling in its crop (?) area that's it very empty like the chick has been off food. When I showed it the water it drank a lot like it hadn't even been going to the water. It's weak enough now that it will lay on its side. Poor thing looks like a goner so I removed it from the brooder so it won't pass on and get pecked at during the night...yuck. I'm concerned now about my other chicks, but not completely sure if this a chicken disease going around or a coincidental bad luck that just happened within a few days of each other. I'm worried about my other chicks in the brooder. I have 10 more chicks of various ages to include the brand new silkie added today. I'm going to clean all their housing equipment and such tomorrow and hope and pray nothing else happens. I have an array of chicks (cochins, seramas, silkies, batams, etc) in that brooder I don't want to lose!