Temporal activity patterns for Dipodomys ordii were generally bimodal during the summer, with the highest peak occurring during early predawn hours when conditions were optimum for water conservation. Removal of dominant members in the population resulted in a substantial shift in the activity pattern to increased activity during the evening hours.
Jorgensen, Clive D.; Smith, H. Duane; and Garcia, James R.
"Temporal activity patterns of Dipodomys ordii population,"
Great Basin Naturalist: Vol. 40
, Article 10.
Available at: http://scholarsarchive.byu.edu/gbn/vol40/iss3/10