I have two six day old chicks. I noticed that the silver laced is not eating very much, and had caked poo on her butt. So yesterday I ran warm water to soften and remove it. When I checked on her this morning she has more caked poo and is unstable after setting her down. she feels lighter than the other chick and is chirping constant. the other chick is perfectly fine. when I hold her she closes her eyes and pants some. Seems to be getting lethargic. I am very worried.I need some advice please.