Ant Update
Her majesty has decided that the optimal nest position is at the bottom of the clear tube that runs from the Ant World formicarium to "Ant Island" and her subjects have busily gathered some detritus and half blocked one end of the pipe. Apparently not uncommon for an intermediate site to be chosen before moving underground.
So much for my attempts at making the Ant World more inviting.
I'm not even going to attempt photos. The resolution of my camera phone is awful and it has a cracked lens. Taking photos of ants through plastic with such a device would be doomed to failure.