Thanks guys, one more question, I had a male in with her but didn't think she was pregnant however I was too late and found some bad eggs about 2 weeks ago, after that I realised the male kept biting her, not on the back as if they were about to... ahem... but on the legs, on the tail etc so I've since had them apart but this morning she's been headbutting the sand in the wet area? Is this a part of making tunnels or could this be a sign she's preparing a laying area?