[BrainGirl]

I've only seen something like this once before, in a hamster who had lived his whole life in a tiny cage. He stuffed his mouth with a huge wad of shredded nesting material and went all around the cage before coming back to the pile and deciding just to nest where he'd started. Perhaps when they encounter a new space and they don't know how big it is they take some supplies with them (like a hiker's backpack!) just in case they go a long way from where they already know they can find stuff?