Right so this is exactly the kind of thing that keeps me going with this research. What you're describing - the hovering over treelines specifically - comes up again and again in the more credible encounter reports and I don't think that's coincidence.
A few things I'd want to know before drawing any conclusions. How long did it stay stationary? Was there any sound at all, even a low hum or a kind of static feeling in the air around you? And did you notice anything unusual with local wildlife in the minutes before you spotted it, like birds going quiet or dogs kicking off nearby?
I've been following Mothman-adjacent cases for years now and the treeline detail is really significant to me personally. A lot of Birmingham-area reports from the last decade mention exactly this. People always assume these things are happening in rural America somewhere but honestly they're not.
Don't let anyone tell you it was a drone. Document everything you remember right now while its fresh, even the stuff that feels irrelevant. What time was this?