In winter, fresh green grasses preferred. The rest of the year, pickleweed and saltgrass are main food sources. Nests of grass and sedge built on ground associated with R. r. halicoetes, and are similar to those constructed by R. megalotis.
Free water is required, but both subspecies are capable of drinking salt water.
The differences probably relate to the normal salinity levels in the salt water available to natural populations. Most of this daylight activity occurred in the afternoon. R. r. raviventris can become torpid, particularly in the early morning hours. These movements are likely to occur daily and do not represent complete shifts in habitats. No data found.