During my last inspection, I got covered in quite a few bees. After walking away, and shaking the last of the bees off my jacket, I noticed what looked like (what I can only describe as) "Bee Turds". It is a tubular substance, greenish/yellowish/brownish. I brushed it off, but a yellow stain was left behind.
What is this stuff?
Maybe relevant, maybe not: it was a bit cool for inspection that day, and there were a lot of bees in the hive. They were more interested in me than usual.