Went to feed the girls this morning and Chirp didn't come up to the top like usual. Kept looking for her but, being there are alot of places to hide, I figured she would come out in a bit and I would see her then. Was sitting in the floor folding laundry when I noticed something under my tank stand. Went to get it out and thought it was some kind of plastic piece. Thought, where did this come from? Then "really" looked at the plastic and ......IT WAS CHIRP!!! Gack. She had to have escaped during the night sometime. Poor girl. Found the place of escape and it is now fixed. A bit to late but fixed none the less. I'm sorry Chirp.