has anyone seen this before? Its the bum of my 2 wk old ancona chick. She's one of the 2 that seems to be stuck with pasty butt. I clean her daily, and it didn't look like this yesterday. I haven't seen any pecking in the brooder....there is a little acv and molasses in the water, clean shavings, unmedicated feed...they had greek yogurt once a few days ago... Its shiny due to some neosporin.