I put this up in the "Show your cages" thread, but I thought it might be worth sharing here.
This is Dave, my lone Roborovskii's cage - I've grabbed some different views, so you can get an idea.
Dave is a very small, very nervous little Robo - tame, but not overly fond of the outside world. She likes some safe space, so I've made sure she has plenty.
Here's the bottom of the cage, showing the burrows I've made for her - the one on the left is simply a u-turn tunnel, but the one on the right leads to another nest, where I hide treats
Main shredded paper nest is top left.
Dave used to be quite keen on digging - "stereotyped behaviour", as I've since discovered - whereby she was digging, because her nature compelled her to do, in the absence of an existing burrow. This is something a lot of small animals, new to domestication, suffer from - most commonly gerbils.
The suggestion is, perhaps - if you give them a burrow, the compulsion will disappear, just as it does in the wild.
I've had some amazing success putting these in - as well as adding a healthy depth of bedding to the base, for her to use as she wishes - and the behaviour has completely disappeared!
Obviously, I'm very, very happy with how things have turned out - and I thought I'd share it with you all, see if it helps elsewhere.
And, lastly, a sleepy little Dave emerging from her burrow!