Mice, Voles & Rats
New World Mice & Rats (Cricetidae)
Measurement: Size: 11.5-20 cm Weight: 10-35 g (0.35-1.25 oz)
Description: This very common mouse can be found from Alaska to Mexico, and in every habitat from the montane to the subalpine. They are generally nocturnal, preferring to hide from sight during the daylight hours They can be identified by their large dark eyes and ears. They are gray-brown above with a white belly. Almost half their length is tail, which helps them maintain their balance. They build a small nest underground, under a stump, under an opening in tree roots, or a diversity of other locations. They also store a large collection of seeds near the nest. They raise two or three litters each year, with three to six young in each litter. This large reproductive rate allows significant loss to owls, coyotes, and weasels. They stay active through the winter, leaving tracks through the snow.