Knocking in Oxford County, Maine

During the Spring/Summer of 2022 I discovered a new favorite remote trout pond not far from my camp. This pond is roughly a 1-mile hike to access. Hiking trails are present however in the roughly 20+ times I visited this pond I saw a total of 5 other people. Two pairs of hikers, and one other lone fisherman. This pond is notorious for wind so I would only visit it on calm days. The more I visited the pond the more I noticed odd occurrences. I personally had never heard a tree fall in the woods until I started going here. Just during my visits to this pond, I heard five tree falls. Although it should be noted that I saw none of them. In addition to this I heard an innumerable number of tree knocks during my visits. My visits here started in April and ended in August. The activity grew greater as the summer progressed. I noted how odd the coincidence of the tree falls was but thought nothing of it until one of my final visits. The peak of the activity was during this visit in mid-August where I heard two tree falls. This peaked my attention off fishing and on to what was going on around me. I noticed on this trip that every time I paddled to the north end of the pond, I was met with tree knocks. This continued until I noticed the mid-section of a birch tree leaned up against another tree on the water's edge. I had paddled up and down that pond at least 100 time over the course of the spring/summer and I had only now noticed the birch tree. I felt as though it had to have been placed there while I was on the south side of the pond. As I was examining the tree from my canoe, I again heard tree knocks again. I then paddled back to the south end and fished there until light began to fade and got ready to hike out. Near the pond large rocks block the trail to ensure no ATV cannot drive directly to the pond. On these rocks sat a perfectly intact birch tree skin. I am not convinced a person couldn't have done these things. However, given the proximity of my experiences to another sighting on this website I felt I should report them. I never had any weird occurrences while hiking in, out, or around the pond. Only when I was on the pond fishing.