Re: Well, it is winter and I have a mouse in my hive!
shovel the 18inches of snow off the top of your hive, tilt the hive back on the bottom board and the mouse will probably run out. Stick your hive tool up between the frames and drag the nest out from between the frames. The bees will be so tightly clustered that they won't bother you. Then set things back in place and add an entrance reducer to keep mice from coming back.
The answers are the end. The questions are the journey. Journey on.