I’ve also used an unkindness of ravens.

I’m not sure about the French translation, but another word for ground is Earth. As a guess, an environmentalist group is probably adapting it from that terminology.

Casually dropping Basque into your comment: +1

This is always the question that trips me up.

I’m 5 years younger than OP. I work in a municipal transportation power system job (we maintain and control the grid for trains, trolleys, etc.). I’m sure I’m wasting all sorts of effort in my professional life. I have time. I got a lot out of learning Power Automate. However, if you ask me to pick one specific project, I get overwhelmed because I don’t know what’s reasonable.

I don’t know enough to know if my ideas are achievable, or if I’d just be bashing my head against the wall. I don’t know if they’re laughably simple tasks, multimillion-dollar propositions, or Goldilocks ideas that would be perfect to learn a coding language.

I’m not a contractor.

I’d poke around for rot and mark the edges to make sure it isn’t spreading. Maybe try to get up there and check after a storm.

It could absolutely be an old problem that stained the wood. I might make a 1-year calendar reminder if I didn’t see anything after a rain.