1 week old had pasty butt (i think thats what its called) i cleaned it off. I noticed the abdomen is hard maybe constipated? Its much smaller than its flock mates and just lays in the momma heating pad. Not eating or drinking and kind of stumbles around. All other birds are fine. Its very very thin and weak. I noticed after the butt wash that it kind of has a click when breathing but not all the time. It is cheeping fine. I dont know what to do for it or what is wrong. Theyve been eating fermented chick starter water with acv and one water with sav a chick probiotics and electrolytes.