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The Effects Of Effort And Day Of Exposure On Imprinting, Jean Elizabeth Van Dyke
The Effects Of Effort And Day Of Exposure On Imprinting, Jean Elizabeth Van Dyke
University of the Pacific Theses and Dissertations
24 pairs of newly-hatched Leghorn chicks were randomly divided into 3 groups. Ss in one group followed a moving object for 30 min on Day 1 of life; Ss in another group followed for 30 min on Day 2; Ss in the remaining group followed for 15 min on Day 1 and 15 min on Day 2. One S in each pair followed by his own effort, while the other S rode behind the object in a transparent box. On Day 4, Ss were tested for the duration of following of the object. No important differences among groups were observed. …
A Comparative Study Of Gross Pelvic Anatomy And Renal Histology Of Two Species Of Sparrows, Shirley Ann Hoskins
A Comparative Study Of Gross Pelvic Anatomy And Renal Histology Of Two Species Of Sparrows, Shirley Ann Hoskins
University of the Pacific Theses and Dissertations
While in no way passing judgments on the quality of the investigations which have been published, there is one conclusion that must be reached and this is that there is room for further investigations. The studies which form the basis of this paper were undertaken to widen the general range of information on the avian kidney and its associated osseous cradle. In addition to the discussion, numerous photographs and diagrams are submitted to clarify and support the text. The present paper deals with with kidney and pelvic girdle of two species of sparrow: Zonotrichia leucophrys and Passer domesticus.
Annotated Checklist Of The Birds Of San Joaquin County, California, James Leroy Tate Jr.
Annotated Checklist Of The Birds Of San Joaquin County, California, James Leroy Tate Jr.
University of the Pacific Theses and Dissertations
Evaluation of many records is the only way valid judgments can be made on abundance and status. The necessity of obtaining exact dates, localities, numbers, and special weather conditions cannot be overemphasized. For this reason, records in supplement to this list are freely solicited.
The present checklist includes all species and subspecies for which specimens exist. In some instances sight records have been adequate reason for including a species on the list when no specimen existed. Sight records for species which are difficult to identify have been admitted upon careful editing. The author has followed the policy outlined by Griscom …