| Slender Harvest Mice occupy a wide range of habitats as long as they can find good ground cover to protect them from hungry birds of prey. They are found from sea level to about 1,370 m elevation in both arid and semi-arid places. They are good climbers, scurrying into cactus hedges, trees, and shrubs, rafters in houses, and among logs and roots on the ground. Not much is known about their reproductive pattern, but females have been found carrying 2-4 fetuses. Total Length: 105-154 mm; Tail: 90-98 mmAllen, J.A, & F.M. Chapman, 1897. Bulletin of the American Museum of Natural History, 9:9. Mammal Species of the World (opens in a new window). Mammalian Species, American Society of Mammalogists' species account * (opens in a new window). * PDF reader available here (opens in a new window).