You hope that you didn't overlook a nest. I think that if the other one is the daddy he might still continue to bring food back for them if they would still be too young to venture out on their own. Good luck, and I hope that you can get rid of your mice. My chicken's eat any mice that they see.
Since you said that there are only 2 of the mice that you saw. They could be breeding and have a nest of little baby mice somewhere that you haven't seen yet.