I just went through this - and based on the advice and experience of the folks on here I added protein and entertainment and solved the problem in fairly short order. My dad (who is an old farmer type who has raised production birds forever) told on the day it happened (it was a blizzard and I couldn't drive anywhere) to put vicks-vaporub on the bird getting picked and they would leave her alone. Under normal circumstances, this is not something I would have done because despite the fact I had a grandma that didn't think anything of giving a kid a spoonful of melted vicks - I worried that it would be bad for the birds but apparently it was so offensive that no one would get near the butt of the bird covered in it - and so there was no ingestion - or at least if there was it didn't harm anyone the one time I did it. Anyway - it seems to have worked in a pinch and it seemed to help scab over the bleeding parts as well.