I have four female Buff Orpingtons on the way (ETA June 11!). Coop building is underway, despite that they won't need it til July at the earliest. I have a question that some might find silly, but hopefully someone knows where I'm coming from. I plan to keep them as pets, and naturally, have already picked out their names. Is there a way I can somehow mark each one so I can tell who is who? would something like a dot of different colored nail polish on their toenail be harmful, or encourage the others to nibble? Or a dot from a sharpie? Any other suggestions? I don't want to have to change their leg bands every week as they grow. Does anyone else have a method for telling them apart?