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These cute mice were about 5-7 cm long (excluding tails), had black eyes, pale pink noses, rounded ears, and a white ventral surface.
Habitat: Found in a map box at a nature center. A month or so ago, someone put an old, empty bird's nest in this box. Today, we found these two mice in the box. They had gotten in through a small opening in the side of the hinged box, had rearranged the bird's nest, and made a cozy home for themselves.
These mice are either Peromyscus leucopus or Peromyscus maniculatus. I think they are most likely Peromyscus leucopus, but can't tell for sure without closer inspection.