Multiplying mice

Just got back from the coop, and now there are rustling sounds in both sides of the coop, simultaneously.  On the left side, there is new damage to the insulation panel.  It looks the mouse is chewing through the panel.  What I thought was one mouse appears to be at least two, maybe two (or more) families of mice.  I will continue to post what happens for my followers, even though I officially hand over my chicken nanny duties tomorrow!