Document Type
Thesis - campus only access
Date of Award
Spring 1969
Degree Name
Master of Science (MS)
Department
Biology
Advisor
Dr. Eugene Flaherty
Abstract
A wintering population of Tree Sparrows (Spizella arborea) were studied in the winter of 1968-69 to provide information regarding energy flow. The Tree Sparrows were found to consume primarily Helianthus annuus seeds when they were available. When these seeds became scarce, Setaria sp. And Sporobolus sp. Seeds became the important foods. Caloric values for most food items were determined and non-ingested foods had significantly higher values than those removed from the stomachs of Tree Sparrows. Existence metabolism rates determined from laboratory food consumption experiments compared favorable to previously reported values for Tree Sparrows and other sparrow species. The efficiency of food assimilation for these experiments was high (87.5%) and closely approximated the food ingested. The estimated energy flow through the wintering population of Tree Sparrows in Kcal/m2/year was: 24.39 ingested, 5.41 lost in excreta, and 18.98 assimilated.
Recommended Citation
Parks, Leland H., "Energy Flow Through a Wintering Population of Tree Sparrows" (1969). Master's Theses. 1233.
DOI: 10.58809/RSOT3675
Available at:
https://scholars.fhsu.edu/theses/1233
Rights
© 1969 Lelman Parks
Comments
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