I just went out to the little grow out pen where I have 3 two month old Ameraucauna chicks that I hatched myself from my own eggs. My largest, has pea green diarrhea and is fluffed up and unsteady on his feet...When he moves at all. When he does move, it's as though he doesn't know where he is putting his feet. They had no vaccinations, and are housed next to our flock of laying hens. The only addition to my flock is a group of 12 pullets that I bought from a reputable small hatchery (no vaccinations) as day old chicks and who finished growing in the same pen as the one the little ones are in. Last week I sprayed the flock and the chicks with livestock pray (permethrins) that is cleared for poultry. Could that have caused the problem? The only other thing that I have noticed is that this baby does not nor has he ever had a tail (ancona-like). Suggestions would be welcomed! His pen mates are fine!