I have an old 80 foot chimney from a coal furnace. I maintain it simple for the annual chimney swifts. They come in mid April and leave in August. Apparently only 2 raise a family in it but it ends up with 100s at its peak occupancy. It’s getting re-pointed this year and I will have 2 hi-def cameras installed at the top to capture the activity. Might end up being my first AI project.