We are new to raising chickens and ha e lost 2 in the course of 3 weeks. They were fine one day and sick the next. We bought all of them in March from Murdochs which is a big chain feed & Tack store and they didnt have specific breed for the majority of the ones we bought. Just that they were straight run. Those are all white and very large in size.. We also have a. Black austrolop* and im sorry but dont remember the breed of the other two i think it is bantam but not sure. Terrible i know. The first one we lost was one of the straight run and a Roo that went very quickly. and now we are losing one of the Bantam which is a hen it looked like we were going to lose her quickly as well but then she started to pull out of it, however she has gone back down overnight.The symptoms they are showing are severe sleepyness, pulling their feet up under them and locked into place so cant stand laying head stretched out on the ground and very un responsive. My neice raises chickens and when i asked her about this she said it sounded like sleepy sickness. We have checked for mites and didnt find any. Also her poo is normal in color (black with white specks). Im especially heart broken about losing the bantam because we have already had to nurse her back to health from a dog attack. Any help would be greatly appreciated. No rude comments please we are heart broken enough.