danceswithronin
Crowing
My suggestion (I just got mail order chicks last week) is to check their little butts every day for pasty butt. I check mine morning and night when I'm refilling the waterer. It's common in mail order chicks due to transport stress and can kill very quickly if it isn't attended to. I ran into this issue with two of my five day old chicks but once I added grit and a bit of hardboiled egg to their medicated feed and got them in a temperature controlled environment, it cleared up in a matter of days. Until it clears up it has to be monitored very carefully though, and any affected chicks have to have their butts cleaned manually so that they don't get a bowel impaction.
Read more about it here: http://pet-chicken.com/what-is-pasty-butt/
Read more about it here: http://pet-chicken.com/what-is-pasty-butt/