Kloppers, have fun at Gma's B-bay party. I also think it is a vole that lost its tail somewhere. they make tunnels in our grass every winter along our retaining wall.
BC looks like you just need to dry it out in there some. Maybe add sweet PDZ under the pine shavings, or add more shavings (I don't know if you use shavings) or open higher ventilation to draw moisture out like you and Blanch said. stinkin' moisture.
Blanch, lol, nice play on words... but run! lol
Got my hen cam up. I may have to move it though, we'll see. they spend 90% of their time under the henhouse. I have it out in the bigger part of the run, more room out there, so that is why I wanted it there. we'll see