I work at a summer camp and we received our horses today for the horse program. We know absolutely nothing about them, and when we sent two back because they were shockingly thin, the owner we called didn't even know which horses he had sent. They are obviously best cared for wherever they are leased out, so when we discovered small yellow beads in a gelding's mane, we weren't shocked.
However, the other horse specialist and myself aren't sure what these are and how to get rid of them. They are very small, like the size of a tick or so, and deep yellow. They run the length of his mane from a bloody tick bite (where they begin) to the base of his neck. They don't seem to bother him, but they aren't dander and are something neither of us have seen.
We roached his mane for other, more tangled, reasons but are unsure what to do with him next. Ideas?