Hi all. One of my week old chicks is eating,drinking and going potty,and has a clean butt, but it is weaker than the others and is shaking its head alot , wiping its bill on the ground and holds its mouth open when i pick it up. It doesnt seem to have much energy either.It sleeps way more than the others. The whole time it tries to sleep it keeps moving his head(like he doesnt want it to touch the ground).Its acting like its trying to keep from spitting something up,like a constant water drinking movement. What can I do?when hes awake he seems ok, but at night I wonder if its suffering...Help please!Hes been doing it since I got him.