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Life History And Ecology Of The Great Basin Sagebrush Swift, Sceloporus Graciosus Graciosus Baird And Girard, 1852, Gary L. Burkholder
Life History And Ecology Of The Great Basin Sagebrush Swift, Sceloporus Graciosus Graciosus Baird And Girard, 1852, Gary L. Burkholder
Theses and Dissertations
The sagebrush swift, Sceloporus graciosus graciosus, is abundant in the transitional zone of the Great Basin. As an intermediate link the the food chain, sagebrush swifts are preyed upon by snakes and hawks, and in turn are predators of small arthropods.
Habitat And Time Utilization Of A Pair Of Nesting Sharp-Shinned Hawks (Accipiter Striatus Velox) : A Telemetry Study, Joseph Belnap Platt
Habitat And Time Utilization Of A Pair Of Nesting Sharp-Shinned Hawks (Accipiter Striatus Velox) : A Telemetry Study, Joseph Belnap Platt
Theses and Dissertations
Telemetric observations were conducted on a pair of Sharp-Shinned Hawks (Accipiter striatus velox) nesting in Spanish Fork Canyon, Utah in 1972. The movements of both adults were monitored from the time their eggs hatched in late June until they left the study area in early August, fourty-two days later. A transmitter was also attached to one of the young at the time of fledging. The adult's main hunting area was a single plant community located 1600 meters from the nest. The male performed the majority of the foraging while the female spent the greatest part of her time at the …
Growth And Development Of The Western Harvest Mouse, Reithrodontomys Megalotis Megalotis, Gary H. Richins
Growth And Development Of The Western Harvest Mouse, Reithrodontomys Megalotis Megalotis, Gary H. Richins
Theses and Dissertations
Growth rates, gestation period, litter size, reproductive age, sex ratios, and development were studied on 198 litters of Reithrodontomys megalotis megalotis. Growth was characterized by several standard skull and body measurements, and was partitioned into four phases of 1-3, 4-12, 13-22, and 23-70 days. Growth was best described by measurements of tail length, ear length, and dried eye lens weight. Reproductive activity began as early as 38 days for females and 59 days for males. Gestation period was 22 days and mean litter size was 3.83 (range 1-7). Sex ratio was 53.49% males to 46.51% females. Reproductive efficiency was 53.53%. …