This is our third time raising chicks, our first time raising ones we hatched ourselves. Most of them are mixes, as we have one rooster and 4 breeds of hens. They have reached that awkward stage where they are about half adult feathers and half down. Well a bit beyond that now. (They grow so fast!) I've noticed some look pretty rough around the hind end, though. One has no tail feathers at all. Overall they look healthy. I've been watching them, and haven't noticed any real pecking while I observe, no pulling feathers. But I don't watch them all day, and when I show up, they are mostly interested in food or water, even if they still have enough of those things. So they are fixated mostly on me while I'm watching them. Are there clear signs of pecking that make it unmistakable? Should I just pull up a chair and watch them for a few hours? If I do catch one that's pulling feathers, what should I do?