I can't really tell from the pictures but I would approach them as feather cysts until I found something to tell me otherwise. I would try to soften them up and clean them out. Being on the wings, softening by soaking would probably not be real effective. You could try applying decolorized iodine overnight to see if that softens them up. As to whether to do it now, or wait for the chicks to be older, that's a judgement call, hard to say when I can't observe things. Maybe try one of the cysts, see how that one goes, and then decide if it's prudent to do them now or wait til the babies are older.