I'm new at chickens and so basically I'm always convinced something is terribly wrong.... I lost one chick and I'm really afraid of losing any others. They are mostly about a week or so old now, with the chick I'm worried about being about a week and a half ish. They are all real active and eating and drinking- however there is a fair amount of feather cleaning/ itching/ pruning.....is this pretty typical as they are starting to feather or is this likely a sign of mites? I looked earlier but its pretty hard to tell as most my chicks are black/gray. Also- my biggest gal (week and a half old silver laced wyandotte) has been laying down a bunch today. Eyes open, still pecking around, eating and drinking...but its like every time she walks a bit she seems exhausted and just flops down into a normal laying down pose. Is it possible shes just sore/ using extra energy from a growth spurt? She was real active and wild a day ago its just today I've noticed her inclination to lay. I've got a bottle of Corid just in case - there was one poo today that looked a little orangy and I was worried may have been blood but nothing since. It was dried when I got home so hard to tell..... I'm not sure if I should just run a dose to be sure? Is there different thoughts on treatment/ prevention/ wait-watch?