| Plains Harvest Mice are found in grassy areas, including hay and wheat fields. They seem to prefer shorter grasses, and build round nests of grass on or near the ground. Newborns are blind and hairless, and weigh about a gram, but are weaned at about two weeks and are adult-size in five weeks.
Baird, S.F., 1855. Characteristics of some new species of North American Mammalia, collected chiefly in connection with the U.S. surveys of a railroad route to the Pacific, p. 335. Proceedings of the Academy of Natural Sciences of Philadelphia, 7:333-336.
Mammal Species of the World
Mammalian Species, American Society of Mammalogists' species account