Hmmm...maybe so.They may have brought in wet cones which dried in your attic.
The crew came yesterday to haul off the barn materials. I have the greatest respect for these young men, ages 25, 18, and 16 (brothers). They had to carry it all a good distance, up and downhill across rocky rugged ground to the trailer to haul away. $160 labor for four hours of hard work for three people. I would have paid five times that amount because I doubt many other people would even agree to do this, at all. Add to that $70 for the dump fee and $70 for trailer rental, which was filled to the top. $300 total. It is about two thirds done. They will return another day to finish. This job is being fitted in between other larger jobs. Fine with me.
I have another young man who does landscaping, tree downing, clearing (same family as above). He has done work for me before, felling and hauling away dead trees. I have asked him to come help me decide what to do with the back property (where the barn was). Mostly it is dry, rocky, dead brush. I walked it again yesterday. There is a very large bush, dead I think, that I was sure I wanted to take out. While standing there looking at it, I noticed two chipmunks moving around in it. So...maybe it will stay there. It had not occurred to me that some of this may be wildlife habitat. The only animals I have seen back there are grasshoppers and the neighbor's cows when they escaped through the fence.
I can see where others before me have planted things back there and it has all died for lack of water and poor soil. I may just remove the dead stuff, or most of it, and let nature have it back.
Still cold but next week is supposed to warm up. Meanwhile, I have resorted to sudoku.