So, this one little mouse I have has an aversion to staying in the colony cage. She would go in and out on her own terms. With the packing and such I went ahead and caught her so she didn't end up stranded in the storage unit. She can't escape the travel cage so, I just left her there. Then yesterday I noticed she was getting distinctly pear shaped. I pulled one critter trail out of the colony and set up an escape proof habitat for her. Good thing, today she has at least 9 teensy little pinkies. Don't ask me where she found a male house mouse. They aren't common here, this is deer mouse county. She must have really wanted babies.