Hi there! I have just joined up and saw your post. If it is any help, our Andalusian bantam hen lost a toe nail last year. We bathed the toe until it was clean, dabbed iodine on it (I would think any antiseptic would do), and wrapped it it cotton wool secured with micropore surgical tape. Then we made her a little 'wellington boot' out of the finger of an old rubber glove and taped this over her injured toe, securing it to her leg. This protected the toe nail from getting pecked and also dirt & bacteria. Chickens aren't fussy where they tread! We changed this dressing daily in the beginning and alternate days after that, keeping it on for around 10 days until the toe wound completely healed. She did walk slightly funny in her wellie, kind of goose stepping a bit with that leg, but it didn't slow her down at all! If you have an Andalusian Bantam, you will know how incredibly fast they are!! She then grew another perfect nail and you can't tell there was ever anything wrong now.