I have new bantams, 5-6 days old. There are five of them. Four are doing well, one though is....off. It chirps loudly all the time. I've adjusted heat, it has food and water, company, everything to make a chick happy. Aside from the crying, it also has constant pasty butt and runny poop. I'm washing it several times a day and still it just poops all over itself. It also hardly seems to sleep, it just stands there half asleep and crying. Tonight I've snuggled it up in a fleece blanket with me and it's stopped crying mostly but now while it's sleeping it keeps shaking its head. Almost a twitch. When it wakes up it's just basically shrieking until I manage to get it to sleep again. Any ideas? Anything I can do??