I had recently received some chicks from someone and they have died off. I only have 5 out of 20 left. The week old chicks are laying down and spreading out almost like their dead. They just seem to be VERY lazy. I give them vitamins in their water, have crushed their food. Good clean conditions and plenty of warmth. I've raised Coturnix for a while not but I've never ran by this. Even some of my 4 week old birds have been acting strange. I had 2 today that wanted to lay on their side and it seems like the life in them has been sucked out. I seperated them and they later died. Do these chicks have something wrong with them? Inbred perhaps? Or a bird disease that spread to my older birds?