Thanks for that. I'd seen that info on various web sites already though and whilst very helpful, I'm not sure it answers my specific questions.

I do understand your comments about the kittens' mum wanting to keep them where she had them... but for how long will this last? Perhaps it's just a silly question as I guess when they are old enough to walk around, they will move anyway... but I guess she and they will keep the "under the bed area" as their home for a few weeks to come.