[Points at a spot between two particularly large pines, their branches rustling a little before one of the aforementioned beings emerges from it, sluggishly pacing around the edge of the woods for a minute of so. Sherlock lowers his hand, folding it back under his arms and continuing.]
I had noticed earlier in the week that they usually avoid the castle, preferring to stay within the forests. The why is yet to be determined. What remains crystal clear, however, is that every night around this hour, a few of them will come out into the open, have a look around, and then return to the woods. [Nods again as the snow creature does just that.]
Another will be back to do the same. Perhaps one more there after. I submit that they are patrolling the parameter of the woods. The purpose, again, I haven't discovered.