The cotton mouse (Peromyscus gossypinus) is fairly common throughout most of its range from Virginia to Florida, W to eastern Texas and N through Tennessee to western Kentucky.
We identified an individual as a cotton mouse only when there was agreement using the criteria of both Hoffmeister (1977) and Laerm and Boone (1994).
Among 62 individual Peromyscus trapped on the Jackson County site, one confirmed cotton mouse was removed (SIUC #3722).
Because the species is on the periphery of its range and commonly inhabits bottomland forest, cotton mouse populations in southern Illinois likely are ephemeral, and undergo periodic extirpation as a result of flooding or other extrinsic factors.
Geographic and non-geographic morphological variation in the cotton mouse (Peromyscus gossypinus).