I notice several of my rainbow chickens limping around when i picked the up the center pad on their feet had a scab on it an their feet are turning blue like no blood flow. Does anyone have a idea what could be wrong.
The scab is the classic sign of bumblefoot. You'll need to get that treated or the infection can go systemic and they will die. You could try treating with tricide neo (the fish medicine) and see if that clears it up but if not you'll have to go ahead and do the bumblefoot surgery.