I have a 1 1/2 week old chick and I noticed that she seemed constipated yesterday. her poops were coming out in small little poops one by one instead of one large poop. and then there appeared to be one stuck in there that she was triying to get out but failed. today she's laying around a lot more and she shakes her head to the side like in a little twitch. she's laying on me right now. she's eating and drinking... but when I gave the others some corn earlier she didn't join in on the chase for it. she just stood there. she has a billion feathers poking through right now. how do I know if she's really sick? and if she is, what can I do for her? thank you.