LIFE HISTORY OF THE KANGAROO RAT,
Dipodomys spectabilis spectabilis Merriam.
By Charles T. Vorhies, Entomologist, Agricultural Experiment Station, University of Arizona; and Walter P. Taylor, Assistant Biologist, Bureau of Biological Survey, U. S. Department of Agriculture.
CONTENTS.
| Page | |
| Importance of rodent groups | [1] |
| Investigational methods | [2] |
| Identification | [3] |
| Description | [5] |
| General characters | [5] |
| Color | [6] |
| Oil gland | [6] |
| Measurements and weights | [7] |
| Occurrence | [7] |
| General distribution | [7] |
| Habitat | [7] |
| Habits | [9] |
| Evidence of presence | [9] |
| Mounds | [9] |
| Runways and tracks | [10] |
| Signals | [11] |
| Voice | [12] |
| Daily and seasonal activity | [12] |
| Pugnacity and sociability | [13] |
| Sense developments | [14] |
| Movements and attitudes | [15] |
| Storing habits | [15] |
| Breeding habits | [16] |
| Food and storage | [18] |
| Burrow systems, or dens | [28] |
| Commensals and enemies | [33] |
| Commensals | [33] |
| Natural checks | [34] |
| Parasites | [35] |
| Abundance | [36] |
| Economic considerations | [36] |
| Control | [37] |
| Summary | [38] |
| Bibliography | [40] |
Note.—This bulletin, a joint contribution of the Bureau of Biological Survey and the Arizona Agricultural Experiment Station, contains a summary of the results of investigations of the relation of a subspecies of kangaroo rat to the carrying capacity of the open ranges, being one phase of a general study of the life histories of rodent groups as they affect agriculture, forestry, and grazing.