Why are rice fields important habitats for Ryukyu mice?

In the context of the genus Mus, rice fields serve as important habitats for the Ryukyu mouse (M. caroli) because they provide a suitable environment for the species' specialized burrowing behavior.1

In areas such as the diked rice fields of Thailand, these mice construct tunnels within the dikes. These tunnels are strategically designed to extend upward to a nest chamber located above the water level, with openings on both sides of the dike. This adaptation allows the Ryukyu mouse to thrive in agricultural settings by utilizing the structure of the rice fields to create secure, dry living spaces despite the presence of water.1