I have 12 three week old pullets in our 4'x2.5' brooder. There is one pullet that has always been friendlier than the rest. She's the only one that will come check us out while we are sitting next to the brooder and the only one that lets us hold her without freaking out. Other than that, she's active and acts healthy. Yesterday we found all the chicks chasing after her butt and noticed blood. We immediately separated her to her own brooder area and she's stil doing ok today. However I'm concerned about the area because not only did they pluck her tail feathers, they also plucked skin and there was some tissue present. This is her butt today. It seems to be trying to scab. Should I be doing anything to help or would it be best to save her the stress of handling and messing with it and just let her body heal itself?