![]() ![]() It eats mainly plant seeds and makes small burrows in soil close to or under rocks to evade owls, its main predator. Description This activity allows students to collect and analyze data on the evolution of coat color in rock pocket mouse populations living on differently colored substrates. Rock pocket mice inhabit desert and are particularly associated with rocky areas. ![]() Rock Pocket Mice breed from February or March through July, and young have been seen from April through August. Found mainly in rocky outcrops in the deserts of the southwestern United States and Mexico, the rock pocket mouse is medium-sized (length 18 cm, weight 1218g) and nocturnal. This is typical of pocket mice - their color often matches the background color of their habitat. The mouse pictured is sitting on a lava rock, probably in New Mexico, and the color of its fur blends with the dark rock. The rock pocket mouse, Chaetodipus intermedius, provides a useful system for studying the genetics of adaptation.This species is found in rocky habitats in southern Arizona, New Mexico, and in adjacent areas in northern Mexico. Natural Selection and the Rock Pocket Mouse HHMI BioInteractive Video - YouTube 0:00 / 10:32 Natural Selection and the Rock Pocket Mouse HHMI BioInteractive Video biointeractive 232K. Their inconspicuous burrows are located near or under rocks, in rocky gulches or canyons, or near boulders. (It is sometimes grouped in the genus Perognathus.)Īs their name indicates, Rock Pocket Mice dwell in rocky habitats, and only rarely live in areas with sandy or silty soils. intermedius, is one of 19 species of pocket mice in the genus Chaetodipus. This activity serves to reinforce concepts of variation and natural selection. ![]()
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