Raven: Niccolo's invisibility seems to be effective -- the figure in the tree seems totally unaware of your approach. When you're close enough to make out some features, it appears to be an orc, or half-orc... closer still and you realize it's Yandall, who visited this morning.
Reaching the tree you can see that he is unarmed but for a simple shortbow at his shoulders, and you can see no others around him... In his hand, however, there is a slim bone pipe; he is motionless, but it is clear from his face -- which stares hard still at the path, where you ducked away then disappeared -- that he quite alert.