Located in the basement, these markings are at nearly entire perimeter. Is it mice? I found no poop.
It appears to be leprechauns.
We dont have them here, only Big foots, or Big feets
I looks like some kind of bird area, to me. YMMV
Looks like it may be related to insect activity. I’m basing that only on the concentration of the stains, some insects have to repeat their trails based on pherome trails. Rodents, amphibians, reptiles don’t and usually have their paths limited only by obstacles, which this appears to be fairly open. My guess is some type of crickets. Other than that, I don’t have any guess better than anyone elses.
Thanks Guys. Funny thing is, the tracks are only near the dry walls, not the wall that is damp.