I have 7 new baby chicks, all has been well they are on medicated feed. Today I noticed my gold lace wyandotte was not really moving around at all. She just stands with her feathers puffed out and head tucked like she's sleeping. I've noticed she's a bit smaller than her brooder mates (one is a SL wyandotte, same age) and doesn't seem to be preening or cleaning herself. First time with chickens. Any suggestions or help?